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Finding the Fourth Proportional to 342,331.20, 513,543.52 and 142,604.88

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Solution

The fourth proportional to 342,331.20, 513,543.52 and 142,604.88 is: 213,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,331.20 : 513,543.52 = 142,604.88 : x
  2. Step 2: Convert to fraction form
    342,331.20/513,543.52 = 142,604.88/x
  3. Step 3: Cross multiply
    342,331.20x = 513,543.52 × 142,604.88
  4. Step 4: Simplify right side
    342,331.20x = 73,233,809,762.08
  5. Step 5: Solve for x
    x = 73,233,809,762.08/342,331.20
  6. Step 6: Final answer
    x = 213,926.78

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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.