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Finding the Fourth Proportional to 360,781.69, 497,931.28 and 207,790.11

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Solution

The fourth proportional to 360,781.69, 497,931.28 and 207,790.11 is: 286,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,781.69 : 497,931.28 = 207,790.11 : x
  2. Step 2: Convert to fraction form
    360,781.69/497,931.28 = 207,790.11/x
  3. Step 3: Cross multiply
    360,781.69x = 497,931.28 × 207,790.11
  4. Step 4: Simplify right side
    360,781.69x = 103,465,195,443.64
  5. Step 5: Solve for x
    x = 103,465,195,443.64/360,781.69
  6. Step 6: Final answer
    x = 286,780.62

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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.