Home / 214,422.96-321,590.70-81,257.34

Finding the Fourth Proportional to 214,422.96, 321,590.70 and 81,257.34

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Solution

The fourth proportional to 214,422.96, 321,590.70 and 81,257.34 is: 121,869.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,422.96 : 321,590.70 = 81,257.34 : x
  2. Step 2: Convert to fraction form
    214,422.96/321,590.70 = 81,257.34/x
  3. Step 3: Cross multiply
    214,422.96x = 321,590.70 × 81,257.34
  4. Step 4: Simplify right side
    214,422.96x = 26,131,604,850.74
  5. Step 5: Solve for x
    x = 26,131,604,850.74/214,422.96
  6. Step 6: Final answer
    x = 121,869.43

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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.