Home / 217,867.80-326,917.80-84,752.40

Finding the Fourth Proportional to 217,867.80, 326,917.80 and 84,752.40

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Solution

The fourth proportional to 217,867.80, 326,917.80 and 84,752.40 is: 127,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,867.80 : 326,917.80 = 84,752.40 : x
  2. Step 2: Convert to fraction form
    217,867.80/326,917.80 = 84,752.40/x
  3. Step 3: Cross multiply
    217,867.80x = 326,917.80 × 84,752.40
  4. Step 4: Simplify right side
    217,867.80x = 27,707,068,152.72
  5. Step 5: Solve for x
    x = 27,707,068,152.72/217,867.80
  6. Step 6: Final answer
    x = 127,173.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.