Home / 398,830.43-550,387.71-217,546.25

Finding the Fourth Proportional to 398,830.43, 550,387.71 and 217,546.25

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Solution

The fourth proportional to 398,830.43, 550,387.71 and 217,546.25 is: 300,214.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,830.43 : 550,387.71 = 217,546.25 : x
  2. Step 2: Convert to fraction form
    398,830.43/550,387.71 = 217,546.25/x
  3. Step 3: Cross multiply
    398,830.43x = 550,387.71 × 217,546.25
  4. Step 4: Simplify right side
    398,830.43x = 119,734,779,604.65
  5. Step 5: Solve for x
    x = 119,734,779,604.65/398,830.43
  6. Step 6: Final answer
    x = 300,214.76

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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.