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Finding the Fourth Proportional to 229,752.48, 317,072.96 and 129,156.96

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Solution

The fourth proportional to 229,752.48, 317,072.96 and 129,156.96 is: 178,244.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,752.48 : 317,072.96 = 129,156.96 : x
  2. Step 2: Convert to fraction form
    229,752.48/317,072.96 = 129,156.96/x
  3. Step 3: Cross multiply
    229,752.48x = 317,072.96 × 129,156.96
  4. Step 4: Simplify right side
    229,752.48x = 40,952,179,611.80
  5. Step 5: Solve for x
    x = 40,952,179,611.80/229,752.48
  6. Step 6: Final answer
    x = 178,244.78

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1.5x scale

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.