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Finding the Fourth Proportional to 216,009.72, 298,045.71 and 125,313.13

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Solution

The fourth proportional to 216,009.72, 298,045.71 and 125,313.13 is: 172,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,009.72 : 298,045.71 = 125,313.13 : x
  2. Step 2: Convert to fraction form
    216,009.72/298,045.71 = 125,313.13/x
  3. Step 3: Cross multiply
    216,009.72x = 298,045.71 × 125,313.13
  4. Step 4: Simplify right side
    216,009.72x = 37,349,040,803.17
  5. Step 5: Solve for x
    x = 37,349,040,803.17/216,009.72
  6. Step 6: Final answer
    x = 172,904.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.