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Finding the Fourth Proportional to 639,082.68, 959,119.74 and 240,086.40

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Solution

The fourth proportional to 639,082.68, 959,119.74 and 240,086.40 is: 360,315.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,082.68 : 959,119.74 = 240,086.40 : x
  2. Step 2: Convert to fraction form
    639,082.68/959,119.74 = 240,086.40/x
  3. Step 3: Cross multiply
    639,082.68x = 959,119.74 × 240,086.40
  4. Step 4: Simplify right side
    639,082.68x = 230,271,605,545.54
  5. Step 5: Solve for x
    x = 230,271,605,545.54/639,082.68
  6. Step 6: Final answer
    x = 360,315.83

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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.