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Finding the Fourth Proportional to 363,439.20, 544,502.70 and 339,819.60

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Solution

The fourth proportional to 363,439.20, 544,502.70 and 339,819.60 is: 509,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,439.20 : 544,502.70 = 339,819.60 : x
  2. Step 2: Convert to fraction form
    363,439.20/544,502.70 = 339,819.60/x
  3. Step 3: Cross multiply
    363,439.20x = 544,502.70 × 339,819.60
  4. Step 4: Simplify right side
    363,439.20x = 185,032,689,712.92
  5. Step 5: Solve for x
    x = 185,032,689,712.92/363,439.20
  6. Step 6: Final answer
    x = 509,115.94

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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.