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Finding the Fourth Proportional to 221,871.90, 332,613.45 and 133,031.10

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Solution

The fourth proportional to 221,871.90, 332,613.45 and 133,031.10 is: 199,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,871.90 : 332,613.45 = 133,031.10 : x
  2. Step 2: Convert to fraction form
    221,871.90/332,613.45 = 133,031.10/x
  3. Step 3: Cross multiply
    221,871.90x = 332,613.45 × 133,031.10
  4. Step 4: Simplify right side
    221,871.90x = 44,247,933,128.30
  5. Step 5: Solve for x
    x = 44,247,933,128.30/221,871.90
  6. Step 6: Final answer
    x = 199,430.09

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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.