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Finding the Fourth Proportional to 392,338.20, 588,507.30 and 303,764.70

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Solution

The fourth proportional to 392,338.20, 588,507.30 and 303,764.70 is: 455,647.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,338.20 : 588,507.30 = 303,764.70 : x
  2. Step 2: Convert to fraction form
    392,338.20/588,507.30 = 303,764.70/x
  3. Step 3: Cross multiply
    392,338.20x = 588,507.30 × 303,764.70
  4. Step 4: Simplify right side
    392,338.20x = 178,767,743,432.31
  5. Step 5: Solve for x
    x = 178,767,743,432.31/392,338.20
  6. Step 6: Final answer
    x = 455,647.05

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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.