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Finding the Fourth Proportional to 230,976, 318,746.88 and 124,992

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Solution

The fourth proportional to 230,976, 318,746.88 and 124,992 is: 172,488.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,976 : 318,746.88 = 124,992 : x
  2. Step 2: Convert to fraction form
    230,976/318,746.88 = 124,992/x
  3. Step 3: Cross multiply
    230,976x = 318,746.88 × 124,992
  4. Step 4: Simplify right side
    230,976x = 39,840,810,024.96
  5. Step 5: Solve for x
    x = 39,840,810,024.96/230,976
  6. Step 6: Final answer
    x = 172,488.96

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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.