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Finding the Fourth Proportional to 543,338.20, 815,007.30 and 169,361.20

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Solution

The fourth proportional to 543,338.20, 815,007.30 and 169,361.20 is: 254,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,338.20 : 815,007.30 = 169,361.20 : x
  2. Step 2: Convert to fraction form
    543,338.20/815,007.30 = 169,361.20/x
  3. Step 3: Cross multiply
    543,338.20x = 815,007.30 × 169,361.20
  4. Step 4: Simplify right side
    543,338.20x = 138,030,614,336.76
  5. Step 5: Solve for x
    x = 138,030,614,336.76/543,338.20
  6. Step 6: Final answer
    x = 254,041.80

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Similar ratio
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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.