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Finding the Fourth Proportional to 515,569.45, 773,169.63 and 178,519.59

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Solution

The fourth proportional to 515,569.45, 773,169.63 and 178,519.59 is: 267,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,569.45 : 773,169.63 = 178,519.59 : x
  2. Step 2: Convert to fraction form
    515,569.45/773,169.63 = 178,519.59/x
  3. Step 3: Cross multiply
    515,569.45x = 773,169.63 × 178,519.59
  4. Step 4: Simplify right side
    515,569.45x = 138,025,920,589.61
  5. Step 5: Solve for x
    x = 138,025,920,589.61/515,569.45
  6. Step 6: Final answer
    x = 267,715.48

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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.