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Finding the Fourth Proportional to 341,385.98, 512,134.38 and 128,170.62

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Solution

The fourth proportional to 341,385.98, 512,134.38 and 128,170.62 is: 192,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,385.98 : 512,134.38 = 128,170.62 : x
  2. Step 2: Convert to fraction form
    341,385.98/512,134.38 = 128,170.62/x
  3. Step 3: Cross multiply
    341,385.98x = 512,134.38 × 128,170.62
  4. Step 4: Simplify right side
    341,385.98x = 65,640,581,007.92
  5. Step 5: Solve for x
    x = 65,640,581,007.92/341,385.98
  6. Step 6: Final answer
    x = 192,276.74

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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.