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Finding the Fourth Proportional to 221,689.40, 332,582.70 and 71,904.20

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Solution

The fourth proportional to 221,689.40, 332,582.70 and 71,904.20 is: 107,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,689.40 : 332,582.70 = 71,904.20 : x
  2. Step 2: Convert to fraction form
    221,689.40/332,582.70 = 71,904.20/x
  3. Step 3: Cross multiply
    221,689.40x = 332,582.70 × 71,904.20
  4. Step 4: Simplify right side
    221,689.40x = 23,914,092,977.34
  5. Step 5: Solve for x
    x = 23,914,092,977.34/221,689.40
  6. Step 6: Final answer
    x = 107,872.06

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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.