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Finding the Fourth Proportional to 230,565, 318,179.70 and 129,963

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Solution

The fourth proportional to 230,565, 318,179.70 and 129,963 is: 179,348.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,565 : 318,179.70 = 129,963 : x
  2. Step 2: Convert to fraction form
    230,565/318,179.70 = 129,963/x
  3. Step 3: Cross multiply
    230,565x = 318,179.70 × 129,963
  4. Step 4: Simplify right side
    230,565x = 41,351,588,351.10
  5. Step 5: Solve for x
    x = 41,351,588,351.10/230,565
  6. Step 6: Final answer
    x = 179,348.94

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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.