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Finding the Fourth Proportional to 515,569.13, 773,169.15 and 178,519.28

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Solution

The fourth proportional to 515,569.13, 773,169.15 and 178,519.28 is: 267,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,569.13 : 773,169.15 = 178,519.28 : x
  2. Step 2: Convert to fraction form
    515,569.13/773,169.15 = 178,519.28/x
  3. Step 3: Cross multiply
    515,569.13x = 773,169.15 × 178,519.28
  4. Step 4: Simplify right side
    515,569.13x = 138,025,596,779.81
  5. Step 5: Solve for x
    x = 138,025,596,779.81/515,569.13
  6. Step 6: Final answer
    x = 267,715.01

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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.