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Finding the Fourth Proportional to 341,759.20, 512,694.24 and 128,543.80

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Solution

The fourth proportional to 341,759.20, 512,694.24 and 128,543.80 is: 192,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,759.20 : 512,694.24 = 128,543.80 : x
  2. Step 2: Convert to fraction form
    341,759.20/512,694.24 = 128,543.80/x
  3. Step 3: Cross multiply
    341,759.20x = 512,694.24 × 128,543.80
  4. Step 4: Simplify right side
    341,759.20x = 65,903,665,847.71
  5. Step 5: Solve for x
    x = 65,903,665,847.71/341,759.20
  6. Step 6: Final answer
    x = 192,836.55

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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.