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Finding the Fourth Proportional to 221,953.77, 332,962.25 and 72,145.89

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Solution

The fourth proportional to 221,953.77, 332,962.25 and 72,145.89 is: 108,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,953.77 : 332,962.25 = 72,145.89 : x
  2. Step 2: Convert to fraction form
    221,953.77/332,962.25 = 72,145.89/x
  3. Step 3: Cross multiply
    221,953.77x = 332,962.25 × 72,145.89
  4. Step 4: Simplify right side
    221,953.77x = 24,021,857,501.92
  5. Step 5: Solve for x
    x = 24,021,857,501.92/221,953.77
  6. Step 6: Final answer
    x = 108,229.10

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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.