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Finding the Fourth Proportional to 347,915.60, 522,046.20 and 137,560.40

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Solution

The fourth proportional to 347,915.60, 522,046.20 and 137,560.40 is: 206,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,915.60 : 522,046.20 = 137,560.40 : x
  2. Step 2: Convert to fraction form
    347,915.60/522,046.20 = 137,560.40/x
  3. Step 3: Cross multiply
    347,915.60x = 522,046.20 × 137,560.40
  4. Step 4: Simplify right side
    347,915.60x = 71,812,884,090.48
  5. Step 5: Solve for x
    x = 71,812,884,090.48/347,915.60
  6. Step 6: Final answer
    x = 206,408.92

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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.