Home / 398,824.61-550,379.69-217,540.43

Finding the Fourth Proportional to 398,824.61, 550,379.69 and 217,540.43

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Solution

The fourth proportional to 398,824.61, 550,379.69 and 217,540.43 is: 300,206.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,824.61 : 550,379.69 = 217,540.43 : x
  2. Step 2: Convert to fraction form
    398,824.61/550,379.69 = 217,540.43/x
  3. Step 3: Cross multiply
    398,824.61x = 550,379.69 × 217,540.43
  4. Step 4: Simplify right side
    398,824.61x = 119,729,835,950.02
  5. Step 5: Solve for x
    x = 119,729,835,950.02/398,824.61
  6. Step 6: Final answer
    x = 300,206.74

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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.