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Finding the Fourth Proportional to 229,780.80, 344,671.20 and 155,131.20

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Solution

The fourth proportional to 229,780.80, 344,671.20 and 155,131.20 is: 232,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,780.80 : 344,671.20 = 155,131.20 : x
  2. Step 2: Convert to fraction form
    229,780.80/344,671.20 = 155,131.20/x
  3. Step 3: Cross multiply
    229,780.80x = 344,671.20 × 155,131.20
  4. Step 4: Simplify right side
    229,780.80x = 53,469,256,861.44
  5. Step 5: Solve for x
    x = 53,469,256,861.44/229,780.80
  6. Step 6: Final answer
    x = 232,696.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.