Home / 154,428.20-231,642.30-147,211.10

Finding the Fourth Proportional to 154,428.20, 231,642.30 and 147,211.10

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Solution

The fourth proportional to 154,428.20, 231,642.30 and 147,211.10 is: 220,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,428.20 : 231,642.30 = 147,211.10 : x
  2. Step 2: Convert to fraction form
    154,428.20/231,642.30 = 147,211.10/x
  3. Step 3: Cross multiply
    154,428.20x = 231,642.30 × 147,211.10
  4. Step 4: Simplify right side
    154,428.20x = 34,100,317,789.53
  5. Step 5: Solve for x
    x = 34,100,317,789.53/154,428.20
  6. Step 6: Final answer
    x = 220,816.65

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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.