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Finding the Fourth Proportional to 221,486.20, 332,277.90 and 71,733.40

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Solution

The fourth proportional to 221,486.20, 332,277.90 and 71,733.40 is: 107,615.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,486.20 : 332,277.90 = 71,733.40 : x
  2. Step 2: Convert to fraction form
    221,486.20/332,277.90 = 71,733.40/x
  3. Step 3: Cross multiply
    221,486.20x = 332,277.90 × 71,733.40
  4. Step 4: Simplify right side
    221,486.20x = 23,835,423,511.86
  5. Step 5: Solve for x
    x = 23,835,423,511.86/221,486.20
  6. Step 6: Final answer
    x = 107,615.84

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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.