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Finding the Fourth Proportional to 230,999, 318,778.62 and 125,015

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Solution

The fourth proportional to 230,999, 318,778.62 and 125,015 is: 172,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,999 : 318,778.62 = 125,015 : x
  2. Step 2: Convert to fraction form
    230,999/318,778.62 = 125,015/x
  3. Step 3: Cross multiply
    230,999x = 318,778.62 × 125,015
  4. Step 4: Simplify right side
    230,999x = 39,852,109,179.30
  5. Step 5: Solve for x
    x = 39,852,109,179.30/230,999
  6. Step 6: Final answer
    x = 172,520.70

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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.