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Finding the Fourth Proportional to 214,371.60, 321,672.60 and 89,725.20

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Solution

The fourth proportional to 214,371.60, 321,672.60 and 89,725.20 is: 134,636.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,371.60 : 321,672.60 = 89,725.20 : x
  2. Step 2: Convert to fraction form
    214,371.60/321,672.60 = 89,725.20/x
  3. Step 3: Cross multiply
    214,371.60x = 321,672.60 × 89,725.20
  4. Step 4: Simplify right side
    214,371.60x = 28,862,138,369.52
  5. Step 5: Solve for x
    x = 28,862,138,369.52/214,371.60
  6. Step 6: Final answer
    x = 134,636.02

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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.