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Finding the Fourth Proportional to 214,885.48, 321,885.26 and 125,869.12

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Solution

The fourth proportional to 214,885.48, 321,885.26 and 125,869.12 is: 188,544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,885.48 : 321,885.26 = 125,869.12 : x
  2. Step 2: Convert to fraction form
    214,885.48/321,885.26 = 125,869.12/x
  3. Step 3: Cross multiply
    214,885.48x = 321,885.26 × 125,869.12
  4. Step 4: Simplify right side
    214,885.48x = 40,515,414,417.17
  5. Step 5: Solve for x
    x = 40,515,414,417.17/214,885.48
  6. Step 6: Final answer
    x = 188,544.22

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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.