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Finding the Fourth Proportional to 343,487.20, 515,230.80 and 292,748.80

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Solution

The fourth proportional to 343,487.20, 515,230.80 and 292,748.80 is: 439,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,487.20 : 515,230.80 = 292,748.80 : x
  2. Step 2: Convert to fraction form
    343,487.20/515,230.80 = 292,748.80/x
  3. Step 3: Cross multiply
    343,487.20x = 515,230.80 × 292,748.80
  4. Step 4: Simplify right side
    343,487.20x = 150,833,198,423.04
  5. Step 5: Solve for x
    x = 150,833,198,423.04/343,487.20
  6. Step 6: Final answer
    x = 439,123.20

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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.