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Finding the Fourth Proportional to 221,787.40, 332,729.70 and 72,002.20

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Solution

The fourth proportional to 221,787.40, 332,729.70 and 72,002.20 is: 108,019.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,787.40 : 332,729.70 = 72,002.20 : x
  2. Step 2: Convert to fraction form
    221,787.40/332,729.70 = 72,002.20/x
  3. Step 3: Cross multiply
    221,787.40x = 332,729.70 × 72,002.20
  4. Step 4: Simplify right side
    221,787.40x = 23,957,270,405.34
  5. Step 5: Solve for x
    x = 23,957,270,405.34/221,787.40
  6. Step 6: Final answer
    x = 108,019.08

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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.