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Finding the Fourth Proportional to 279,074.10, 418,611.15 and 89,534.10

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Solution

The fourth proportional to 279,074.10, 418,611.15 and 89,534.10 is: 134,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,074.10 : 418,611.15 = 89,534.10 : x
  2. Step 2: Convert to fraction form
    279,074.10/418,611.15 = 89,534.10/x
  3. Step 3: Cross multiply
    279,074.10x = 418,611.15 × 89,534.10
  4. Step 4: Simplify right side
    279,074.10x = 37,479,972,565.22
  5. Step 5: Solve for x
    x = 37,479,972,565.22/279,074.10
  6. Step 6: Final answer
    x = 134,301.15

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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.