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Finding the Fourth Proportional to 639,079.18, 959,114.49 and 240,082.90

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Solution

The fourth proportional to 639,079.18, 959,114.49 and 240,082.90 is: 360,310.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,079.18 : 959,114.49 = 240,082.90 : x
  2. Step 2: Convert to fraction form
    639,079.18/959,114.49 = 240,082.90/x
  3. Step 3: Cross multiply
    639,079.18x = 959,114.49 × 240,082.90
  4. Step 4: Simplify right side
    639,079.18x = 230,266,988,191.22
  5. Step 5: Solve for x
    x = 230,266,988,191.22/639,079.18
  6. Step 6: Final answer
    x = 360,310.58

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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.