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Finding the Fourth Proportional to 310,487.28, 465,341.48 and 132,785.68

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Solution

The fourth proportional to 310,487.28, 465,341.48 and 132,785.68 is: 199,011.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,487.28 : 465,341.48 = 132,785.68 : x
  2. Step 2: Convert to fraction form
    310,487.28/465,341.48 = 132,785.68/x
  3. Step 3: Cross multiply
    310,487.28x = 465,341.48 × 132,785.68
  4. Step 4: Simplify right side
    310,487.28x = 61,790,684,854.01
  5. Step 5: Solve for x
    x = 61,790,684,854.01/310,487.28
  6. Step 6: Final answer
    x = 199,011.97

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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.