Home / 214,257.40-321,426.71-86,183.48

Finding the Fourth Proportional to 214,257.40, 321,426.71 and 86,183.48

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Solution

The fourth proportional to 214,257.40, 321,426.71 and 86,183.48 is: 129,291.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,257.40 : 321,426.71 = 86,183.48 : x
  2. Step 2: Convert to fraction form
    214,257.40/321,426.71 = 86,183.48/x
  3. Step 3: Cross multiply
    214,257.40x = 321,426.71 × 86,183.48
  4. Step 4: Simplify right side
    214,257.40x = 27,701,672,001.83
  5. Step 5: Solve for x
    x = 27,701,672,001.83/214,257.40
  6. Step 6: Final answer
    x = 129,291.56

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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.