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Finding the Fourth Proportional to 542,824.10, 814,236.15 and 343,369.70

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Solution

The fourth proportional to 542,824.10, 814,236.15 and 343,369.70 is: 515,054.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,824.10 : 814,236.15 = 343,369.70 : x
  2. Step 2: Convert to fraction form
    542,824.10/814,236.15 = 343,369.70/x
  3. Step 3: Cross multiply
    542,824.10x = 814,236.15 × 343,369.70
  4. Step 4: Simplify right side
    542,824.10x = 279,584,022,554.66
  5. Step 5: Solve for x
    x = 279,584,022,554.66/542,824.10
  6. Step 6: Final answer
    x = 515,054.55

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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.