Home / 398,839.76-550,399.28-229,106.72

Finding the Fourth Proportional to 398,839.76, 550,399.28 and 229,106.72

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Solution

The fourth proportional to 398,839.76, 550,399.28 and 229,106.72 is: 316,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,839.76 : 550,399.28 = 229,106.72 : x
  2. Step 2: Convert to fraction form
    398,839.76/550,399.28 = 229,106.72/x
  3. Step 3: Cross multiply
    398,839.76x = 550,399.28 × 229,106.72
  4. Step 4: Simplify right side
    398,839.76x = 126,100,173,731.16
  5. Step 5: Solve for x
    x = 126,100,173,731.16/398,839.76
  6. Step 6: Final answer
    x = 316,167.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.