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Finding the Fourth Proportional to 315,382.68, 435,234.78 and 179,412.12

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Solution

The fourth proportional to 315,382.68, 435,234.78 and 179,412.12 is: 247,592.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,382.68 : 435,234.78 = 179,412.12 : x
  2. Step 2: Convert to fraction form
    315,382.68/435,234.78 = 179,412.12/x
  3. Step 3: Cross multiply
    315,382.68x = 435,234.78 × 179,412.12
  4. Step 4: Simplify right side
    315,382.68x = 78,086,394,577.53
  5. Step 5: Solve for x
    x = 78,086,394,577.53/315,382.68
  6. Step 6: Final answer
    x = 247,592.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.