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Finding the Fourth Proportional to 363,428.29, 545,144.49 and 323,631.73

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Solution

The fourth proportional to 363,428.29, 545,144.49 and 323,631.73 is: 485,449.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,428.29 : 545,144.49 = 323,631.73 : x
  2. Step 2: Convert to fraction form
    363,428.29/545,144.49 = 323,631.73/x
  3. Step 3: Cross multiply
    363,428.29x = 545,144.49 × 323,631.73
  4. Step 4: Simplify right side
    363,428.29x = 176,426,054,398.67
  5. Step 5: Solve for x
    x = 176,426,054,398.67/363,428.29
  6. Step 6: Final answer
    x = 485,449.42

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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.