Home / 217,521,179,855.28-298,005,079,568.40-209,368,535,139.72

Finding the Fourth Proportional to 217,521,179,855.28, 298,005,079,568.40 and 209,368,535,139.72

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Solution

The fourth proportional to 217,521,179,855.28, 298,005,079,568.40 and 209,368,535,139.72 is: 286,835,916,460.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,521,179,855.28 : 298,005,079,568.40 = 209,368,535,139.72 : x
  2. Step 2: Convert to fraction form
    217,521,179,855.28/298,005,079,568.40 = 209,368,535,139.72/x
  3. Step 3: Cross multiply
    217,521,179,855.28x = 298,005,079,568.40 × 209,368,535,139.72
  4. Step 4: Simplify right side
    217,521,179,855.28x = 62,392,886,973,431,615,062,016
  5. Step 5: Solve for x
    x = 62,392,886,973,431,615,062,016/217,521,179,855.28
  6. Step 6: Final answer
    x = 286,835,916,460.84

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.