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Finding the Fourth Proportional to 391,548.36, 587,302.38 and 229,532.34

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Solution

The fourth proportional to 391,548.36, 587,302.38 and 229,532.34 is: 344,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,548.36 : 587,302.38 = 229,532.34 : x
  2. Step 2: Convert to fraction form
    391,548.36/587,302.38 = 229,532.34/x
  3. Step 3: Cross multiply
    391,548.36x = 587,302.38 × 229,532.34
  4. Step 4: Simplify right side
    391,548.36x = 134,804,889,568.97
  5. Step 5: Solve for x
    x = 134,804,889,568.97/391,548.36
  6. Step 6: Final answer
    x = 344,286.69

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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.