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Finding the Fourth Proportional to 302,922.62, 454,383.90 and 81,306.62

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Solution

The fourth proportional to 302,922.62, 454,383.90 and 81,306.62 is: 121,959.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,922.62 : 454,383.90 = 81,306.62 : x
  2. Step 2: Convert to fraction form
    302,922.62/454,383.90 = 81,306.62/x
  3. Step 3: Cross multiply
    302,922.62x = 454,383.90 × 81,306.62
  4. Step 4: Simplify right side
    302,922.62x = 36,944,419,091.42
  5. Step 5: Solve for x
    x = 36,944,419,091.42/302,922.62
  6. Step 6: Final answer
    x = 121,959.92

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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.