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Finding the Fourth Proportional to 345,759.87, 518,284.08 and 132,469.86

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Solution

The fourth proportional to 345,759.87, 518,284.08 and 132,469.86 is: 198,568.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,759.87 : 518,284.08 = 132,469.86 : x
  2. Step 2: Convert to fraction form
    345,759.87/518,284.08 = 132,469.86/x
  3. Step 3: Cross multiply
    345,759.87x = 518,284.08 × 132,469.86
  4. Step 4: Simplify right side
    345,759.87x = 68,657,019,517.83
  5. Step 5: Solve for x
    x = 68,657,019,517.83/345,759.87
  6. Step 6: Final answer
    x = 198,568.50

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1.5x scale

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.