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Finding the Fourth Proportional to 442,819.80, 663,245.55 and 342,655.20

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Solution

The fourth proportional to 442,819.80, 663,245.55 and 342,655.20 is: 513,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,819.80 : 663,245.55 = 342,655.20 : x
  2. Step 2: Convert to fraction form
    442,819.80/663,245.55 = 342,655.20/x
  3. Step 3: Cross multiply
    442,819.80x = 663,245.55 × 342,655.20
  4. Step 4: Simplify right side
    442,819.80x = 227,264,536,584.36
  5. Step 5: Solve for x
    x = 227,264,536,584.36/442,819.80
  6. Step 6: Final answer
    x = 513,221.26

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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.