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Finding the Fourth Proportional to 279,189.12, 418,744.14 and 89,624.53

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Solution

The fourth proportional to 279,189.12, 418,744.14 and 89,624.53 is: 134,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,189.12 : 418,744.14 = 89,624.53 : x
  2. Step 2: Convert to fraction form
    279,189.12/418,744.14 = 89,624.53/x
  3. Step 3: Cross multiply
    279,189.12x = 418,744.14 × 89,624.53
  4. Step 4: Simplify right side
    279,189.12x = 37,529,744,821.73
  5. Step 5: Solve for x
    x = 37,529,744,821.73/279,189.12
  6. Step 6: Final answer
    x = 134,424.09

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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.