Home / 342,231.45-513,382.38-129,178.82

Finding the Fourth Proportional to 342,231.45, 513,382.38 and 129,178.82

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Solution

The fourth proportional to 342,231.45, 513,382.38 and 129,178.82 is: 193,781.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,231.45 : 513,382.38 = 129,178.82 : x
  2. Step 2: Convert to fraction form
    342,231.45/513,382.38 = 129,178.82/x
  3. Step 3: Cross multiply
    342,231.45x = 513,382.38 × 129,178.82
  4. Step 4: Simplify right side
    342,231.45x = 66,318,127,490.28
  5. Step 5: Solve for x
    x = 66,318,127,490.28/342,231.45
  6. Step 6: Final answer
    x = 193,781.51

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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.