Home / 461,251.40-691,812.30-145,740.20

Finding the Fourth Proportional to 461,251.40, 691,812.30 and 145,740.20

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Solution

The fourth proportional to 461,251.40, 691,812.30 and 145,740.20 is: 218,589.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,251.40 : 691,812.30 = 145,740.20 : x
  2. Step 2: Convert to fraction form
    461,251.40/691,812.30 = 145,740.20/x
  3. Step 3: Cross multiply
    461,251.40x = 691,812.30 × 145,740.20
  4. Step 4: Simplify right side
    461,251.40x = 100,824,862,964.46
  5. Step 5: Solve for x
    x = 100,824,862,964.46/461,251.40
  6. Step 6: Final answer
    x = 218,589.83

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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.