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Finding the Fourth Proportional to 439,209.60, 658,843.20 and 123,676.80

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Solution

The fourth proportional to 439,209.60, 658,843.20 and 123,676.80 is: 185,523.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,209.60 : 658,843.20 = 123,676.80 : x
  2. Step 2: Convert to fraction form
    439,209.60/658,843.20 = 123,676.80/x
  3. Step 3: Cross multiply
    439,209.60x = 658,843.20 × 123,676.80
  4. Step 4: Simplify right side
    439,209.60x = 81,483,618,677.76
  5. Step 5: Solve for x
    x = 81,483,618,677.76/439,209.60
  6. Step 6: Final answer
    x = 185,523.31

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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.