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Finding the Fourth Proportional to 258,082.38, 386,975.88 and 100,126.44

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Solution

The fourth proportional to 258,082.38, 386,975.88 and 100,126.44 is: 150,132.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,082.38 : 386,975.88 = 100,126.44 : x
  2. Step 2: Convert to fraction form
    258,082.38/386,975.88 = 100,126.44/x
  3. Step 3: Cross multiply
    258,082.38x = 386,975.88 × 100,126.44
  4. Step 4: Simplify right side
    258,082.38x = 38,746,517,230.27
  5. Step 5: Solve for x
    x = 38,746,517,230.27/258,082.38
  6. Step 6: Final answer
    x = 150,132.36

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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.