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Finding the Fourth Proportional to 234,186.34, 351,419.65 and 215,129.20

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Solution

The fourth proportional to 234,186.34, 351,419.65 and 215,129.20 is: 322,822.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,186.34 : 351,419.65 = 215,129.20 : x
  2. Step 2: Convert to fraction form
    234,186.34/351,419.65 = 215,129.20/x
  3. Step 3: Cross multiply
    234,186.34x = 351,419.65 × 215,129.20
  4. Step 4: Simplify right side
    234,186.34x = 75,600,626,514.32
  5. Step 5: Solve for x
    x = 75,600,626,514.32/234,186.34
  6. Step 6: Final answer
    x = 322,822.53

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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.