Home / 266,081.25-398,554.43-215,262.21

Finding the Fourth Proportional to 266,081.25, 398,554.43 and 215,262.21

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Solution

The fourth proportional to 266,081.25, 398,554.43 and 215,262.21 is: 322,434.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,081.25 : 398,554.43 = 215,262.21 : x
  2. Step 2: Convert to fraction form
    266,081.25/398,554.43 = 215,262.21/x
  3. Step 3: Cross multiply
    266,081.25x = 398,554.43 × 215,262.21
  4. Step 4: Simplify right side
    266,081.25x = 85,793,705,583.49
  5. Step 5: Solve for x
    x = 85,793,705,583.49/266,081.25
  6. Step 6: Final answer
    x = 322,434.24

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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.