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Finding the Fourth Proportional to 391,799.72, 587,269.73 and 202,274.30

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Solution

The fourth proportional to 391,799.72, 587,269.73 and 202,274.30 is: 303,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,799.72 : 587,269.73 = 202,274.30 : x
  2. Step 2: Convert to fraction form
    391,799.72/587,269.73 = 202,274.30/x
  3. Step 3: Cross multiply
    391,799.72x = 587,269.73 × 202,274.30
  4. Step 4: Simplify right side
    391,799.72x = 118,789,569,599.22
  5. Step 5: Solve for x
    x = 118,789,569,599.22/391,799.72
  6. Step 6: Final answer
    x = 303,189.53

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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.