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Finding the Fourth Proportional to 343,423.60, 515,135.40 and 231,449.20

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Solution

The fourth proportional to 343,423.60, 515,135.40 and 231,449.20 is: 347,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,423.60 : 515,135.40 = 231,449.20 : x
  2. Step 2: Convert to fraction form
    343,423.60/515,135.40 = 231,449.20/x
  3. Step 3: Cross multiply
    343,423.60x = 515,135.40 × 231,449.20
  4. Step 4: Simplify right side
    343,423.60x = 119,227,676,221.68
  5. Step 5: Solve for x
    x = 119,227,676,221.68/343,423.60
  6. Step 6: Final answer
    x = 347,173.80

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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.