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Finding the Fourth Proportional to 279,424.56, 418,884.11 and 101,890.05

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Solution

The fourth proportional to 279,424.56, 418,884.11 and 101,890.05 is: 152,742.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,424.56 : 418,884.11 = 101,890.05 : x
  2. Step 2: Convert to fraction form
    279,424.56/418,884.11 = 101,890.05/x
  3. Step 3: Cross multiply
    279,424.56x = 418,884.11 × 101,890.05
  4. Step 4: Simplify right side
    279,424.56x = 42,680,122,402.66
  5. Step 5: Solve for x
    x = 42,680,122,402.66/279,424.56
  6. Step 6: Final answer
    x = 152,742.92

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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.