Home / 231,399.20-347,131.20-98,278.40

Finding the Fourth Proportional to 231,399.20, 347,131.20 and 98,278.40

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Solution

The fourth proportional to 231,399.20, 347,131.20 and 98,278.40 is: 147,431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,399.20 : 347,131.20 = 98,278.40 : x
  2. Step 2: Convert to fraction form
    231,399.20/347,131.20 = 98,278.40/x
  3. Step 3: Cross multiply
    231,399.20x = 347,131.20 × 98,278.40
  4. Step 4: Simplify right side
    231,399.20x = 34,115,498,926.08
  5. Step 5: Solve for x
    x = 34,115,498,926.08/231,399.20
  6. Step 6: Final answer
    x = 147,431.36

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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.