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Finding the Fourth Proportional to 292,843.40, 439,265.10 and 82,478.60

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Solution

The fourth proportional to 292,843.40, 439,265.10 and 82,478.60 is: 123,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,843.40 : 439,265.10 = 82,478.60 : x
  2. Step 2: Convert to fraction form
    292,843.40/439,265.10 = 82,478.60/x
  3. Step 3: Cross multiply
    292,843.40x = 439,265.10 × 82,478.60
  4. Step 4: Simplify right side
    292,843.40x = 36,229,970,476.86
  5. Step 5: Solve for x
    x = 36,229,970,476.86/292,843.40
  6. Step 6: Final answer
    x = 123,717.90

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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.