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Finding the Fourth Proportional to 577,247.60, 865,288.20 and 261,930.80

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Solution

The fourth proportional to 577,247.60, 865,288.20 and 261,930.80 is: 392,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,247.60 : 865,288.20 = 261,930.80 : x
  2. Step 2: Convert to fraction form
    577,247.60/865,288.20 = 261,930.80/x
  3. Step 3: Cross multiply
    577,247.60x = 865,288.20 × 261,930.80
  4. Step 4: Simplify right side
    577,247.60x = 226,645,630,456.56
  5. Step 5: Solve for x
    x = 226,645,630,456.56/577,247.60
  6. Step 6: Final answer
    x = 392,631.57

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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.