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Finding the Fourth Proportional to 398,433.60, 597,649.12 and 124,900.64

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Solution

The fourth proportional to 398,433.60, 597,649.12 and 124,900.64 is: 187,350.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,433.60 : 597,649.12 = 124,900.64 : x
  2. Step 2: Convert to fraction form
    398,433.60/597,649.12 = 124,900.64/x
  3. Step 3: Cross multiply
    398,433.60x = 597,649.12 × 124,900.64
  4. Step 4: Simplify right side
    398,433.60x = 74,646,757,583.44
  5. Step 5: Solve for x
    x = 74,646,757,583.44/398,433.60
  6. Step 6: Final answer
    x = 187,350.56

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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.