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Finding the Fourth Proportional to 347,306.60, 521,132.70 and 197,661.80

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Solution

The fourth proportional to 347,306.60, 521,132.70 and 197,661.80 is: 296,591.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,306.60 : 521,132.70 = 197,661.80 : x
  2. Step 2: Convert to fraction form
    347,306.60/521,132.70 = 197,661.80/x
  3. Step 3: Cross multiply
    347,306.60x = 521,132.70 × 197,661.80
  4. Step 4: Simplify right side
    347,306.60x = 103,008,027,520.86
  5. Step 5: Solve for x
    x = 103,008,027,520.86/347,306.60
  6. Step 6: Final answer
    x = 296,591.05

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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.