Home / 214,614.40-321,979.20-191,401.60

Finding the Fourth Proportional to 214,614.40, 321,979.20 and 191,401.60

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Solution

The fourth proportional to 214,614.40, 321,979.20 and 191,401.60 is: 287,153.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,614.40 : 321,979.20 = 191,401.60 : x
  2. Step 2: Convert to fraction form
    214,614.40/321,979.20 = 191,401.60/x
  3. Step 3: Cross multiply
    214,614.40x = 321,979.20 × 191,401.60
  4. Step 4: Simplify right side
    214,614.40x = 61,627,334,046.72
  5. Step 5: Solve for x
    x = 61,627,334,046.72/214,614.40
  6. Step 6: Final answer
    x = 287,153.77

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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.