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Finding the Fourth Proportional to 221,695.40, 332,543.10 and 132,903.20

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Solution

The fourth proportional to 221,695.40, 332,543.10 and 132,903.20 is: 199,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,695.40 : 332,543.10 = 132,903.20 : x
  2. Step 2: Convert to fraction form
    221,695.40/332,543.10 = 132,903.20/x
  3. Step 3: Cross multiply
    221,695.40x = 332,543.10 × 132,903.20
  4. Step 4: Simplify right side
    221,695.40x = 44,196,042,127.92
  5. Step 5: Solve for x
    x = 44,196,042,127.92/221,695.40
  6. Step 6: Final answer
    x = 199,354.80

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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.