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Finding the Fourth Proportional to 543,372.70, 815,059.05 and 188,422.60

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Solution

The fourth proportional to 543,372.70, 815,059.05 and 188,422.60 is: 282,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,372.70 : 815,059.05 = 188,422.60 : x
  2. Step 2: Convert to fraction form
    543,372.70/815,059.05 = 188,422.60/x
  3. Step 3: Cross multiply
    543,372.70x = 815,059.05 × 188,422.60
  4. Step 4: Simplify right side
    543,372.70x = 153,575,545,354.53
  5. Step 5: Solve for x
    x = 153,575,545,354.53/543,372.70
  6. Step 6: Final answer
    x = 282,633.90

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Similar ratio
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1.5x scale

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.