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Finding the Fourth Proportional to 341,545.40, 512,407.70 and 131,190.20

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Solution

The fourth proportional to 341,545.40, 512,407.70 and 131,190.20 is: 196,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,545.40 : 512,407.70 = 131,190.20 : x
  2. Step 2: Convert to fraction form
    341,545.40/512,407.70 = 131,190.20/x
  3. Step 3: Cross multiply
    341,545.40x = 512,407.70 × 131,190.20
  4. Step 4: Simplify right side
    341,545.40x = 67,222,868,644.54
  5. Step 5: Solve for x
    x = 67,222,868,644.54/341,545.40
  6. Step 6: Final answer
    x = 196,819.72

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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.