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Finding the Fourth Proportional to 347,410.60, 521,115.90 and 137,021.20

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Solution

The fourth proportional to 347,410.60, 521,115.90 and 137,021.20 is: 205,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,410.60 : 521,115.90 = 137,021.20 : x
  2. Step 2: Convert to fraction form
    347,410.60/521,115.90 = 137,021.20/x
  3. Step 3: Cross multiply
    347,410.60x = 521,115.90 × 137,021.20
  4. Step 4: Simplify right side
    347,410.60x = 71,403,925,957.08
  5. Step 5: Solve for x
    x = 71,403,925,957.08/347,410.60
  6. Step 6: Final answer
    x = 205,531.80

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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.