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Finding the Fourth Proportional to 207,332.10, 310,801.12 and 81,053.30

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Solution

The fourth proportional to 207,332.10, 310,801.12 and 81,053.30 is: 121,502.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,332.10 : 310,801.12 = 81,053.30 : x
  2. Step 2: Convert to fraction form
    207,332.10/310,801.12 = 81,053.30/x
  3. Step 3: Cross multiply
    207,332.10x = 310,801.12 × 81,053.30
  4. Step 4: Simplify right side
    207,332.10x = 25,191,456,419.70
  5. Step 5: Solve for x
    x = 25,191,456,419.70/207,332.10
  6. Step 6: Final answer
    x = 121,502.92

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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.