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Finding the Fourth Proportional to 347,744.20, 521,640.60 and 137,354.80

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Solution

The fourth proportional to 347,744.20, 521,640.60 and 137,354.80 is: 206,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,744.20 : 521,640.60 = 137,354.80 : x
  2. Step 2: Convert to fraction form
    347,744.20/521,640.60 = 137,354.80/x
  3. Step 3: Cross multiply
    347,744.20x = 521,640.60 × 137,354.80
  4. Step 4: Simplify right side
    347,744.20x = 71,649,840,284.88
  5. Step 5: Solve for x
    x = 71,649,840,284.88/347,744.20
  6. Step 6: Final answer
    x = 206,041.80

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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.