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Finding the Fourth Proportional to 391,462.53, 587,419.56 and 211,548.36

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Solution

The fourth proportional to 391,462.53, 587,419.56 and 211,548.36 is: 317,444.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,462.53 : 587,419.56 = 211,548.36 : x
  2. Step 2: Convert to fraction form
    391,462.53/587,419.56 = 211,548.36/x
  3. Step 3: Cross multiply
    391,462.53x = 587,419.56 × 211,548.36
  4. Step 4: Simplify right side
    391,462.53x = 124,267,644,549.92
  5. Step 5: Solve for x
    x = 124,267,644,549.92/391,462.53
  6. Step 6: Final answer
    x = 317,444.54

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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.