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Finding the Fourth Proportional to 374,654.34, 561,959.19 and 108,408.78

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Solution

The fourth proportional to 374,654.34, 561,959.19 and 108,408.78 is: 162,606.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,654.34 : 561,959.19 = 108,408.78 : x
  2. Step 2: Convert to fraction form
    374,654.34/561,959.19 = 108,408.78/x
  3. Step 3: Cross multiply
    374,654.34x = 561,959.19 × 108,408.78
  4. Step 4: Simplify right side
    374,654.34x = 60,921,310,197.69
  5. Step 5: Solve for x
    x = 60,921,310,197.69/374,654.34
  6. Step 6: Final answer
    x = 162,606.71

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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.