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Finding the Fourth Proportional to 453,487.82, 679,780.35 and 216,553.50

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Solution

The fourth proportional to 453,487.82, 679,780.35 and 216,553.50 is: 324,614.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,487.82 : 679,780.35 = 216,553.50 : x
  2. Step 2: Convert to fraction form
    453,487.82/679,780.35 = 216,553.50/x
  3. Step 3: Cross multiply
    453,487.82x = 679,780.35 × 216,553.50
  4. Step 4: Simplify right side
    453,487.82x = 147,208,814,023.73
  5. Step 5: Solve for x
    x = 147,208,814,023.73/453,487.82
  6. Step 6: Final answer
    x = 324,614.71

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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.