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Finding the Fourth Proportional to 398,555.20, 597,832.80 and 149,204.80

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Solution

The fourth proportional to 398,555.20, 597,832.80 and 149,204.80 is: 223,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,555.20 : 597,832.80 = 149,204.80 : x
  2. Step 2: Convert to fraction form
    398,555.20/597,832.80 = 149,204.80/x
  3. Step 3: Cross multiply
    398,555.20x = 597,832.80 × 149,204.80
  4. Step 4: Simplify right side
    398,555.20x = 89,199,523,357.44
  5. Step 5: Solve for x
    x = 89,199,523,357.44/398,555.20
  6. Step 6: Final answer
    x = 223,807.20

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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.