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Finding the Fourth Proportional to 577,247.10, 865,287.45 and 261,930.30

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Solution

The fourth proportional to 577,247.10, 865,287.45 and 261,930.30 is: 392,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,247.10 : 865,287.45 = 261,930.30 : x
  2. Step 2: Convert to fraction form
    577,247.10/865,287.45 = 261,930.30/x
  3. Step 3: Cross multiply
    577,247.10x = 865,287.45 × 261,930.30
  4. Step 4: Simplify right side
    577,247.10x = 226,645,001,364.74
  5. Step 5: Solve for x
    x = 226,645,001,364.74/577,247.10
  6. Step 6: Final answer
    x = 392,630.82

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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.