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Finding the Fourth Proportional to 332,787.20, 498,478.80 and 220,521.20

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Solution

The fourth proportional to 332,787.20, 498,478.80 and 220,521.20 is: 330,316.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,787.20 : 498,478.80 = 220,521.20 : x
  2. Step 2: Convert to fraction form
    332,787.20/498,478.80 = 220,521.20/x
  3. Step 3: Cross multiply
    332,787.20x = 498,478.80 × 220,521.20
  4. Step 4: Simplify right side
    332,787.20x = 109,925,143,150.56
  5. Step 5: Solve for x
    x = 109,925,143,150.56/332,787.20
  6. Step 6: Final answer
    x = 330,316.62

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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.