Home / 398,938.18-550,480.11-229,172.26

Finding the Fourth Proportional to 398,938.18, 550,480.11 and 229,172.26

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Solution

The fourth proportional to 398,938.18, 550,480.11 and 229,172.26 is: 316,226.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,938.18 : 550,480.11 = 229,172.26 : x
  2. Step 2: Convert to fraction form
    398,938.18/550,480.11 = 229,172.26/x
  3. Step 3: Cross multiply
    398,938.18x = 550,480.11 × 229,172.26
  4. Step 4: Simplify right side
    398,938.18x = 126,154,770,893.75
  5. Step 5: Solve for x
    x = 126,154,770,893.75/398,938.18
  6. Step 6: Final answer
    x = 316,226.37

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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.