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Finding the Fourth Proportional to 345,697.60, 517,671.60 and 329,951.20

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Solution

The fourth proportional to 345,697.60, 517,671.60 and 329,951.20 is: 494,091.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,697.60 : 517,671.60 = 329,951.20 : x
  2. Step 2: Convert to fraction form
    345,697.60/517,671.60 = 329,951.20/x
  3. Step 3: Cross multiply
    345,697.60x = 517,671.60 × 329,951.20
  4. Step 4: Simplify right side
    345,697.60x = 170,806,365,625.92
  5. Step 5: Solve for x
    x = 170,806,365,625.92/345,697.60
  6. Step 6: Final answer
    x = 494,091.85

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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.