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Finding the Fourth Proportional to 391,860.52, 540,672.90 and 248,568.52

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Solution

The fourth proportional to 391,860.52, 540,672.90 and 248,568.52 is: 342,964.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,860.52 : 540,672.90 = 248,568.52 : x
  2. Step 2: Convert to fraction form
    391,860.52/540,672.90 = 248,568.52/x
  3. Step 3: Cross multiply
    391,860.52x = 540,672.90 × 248,568.52
  4. Step 4: Simplify right side
    391,860.52x = 134,394,262,557.11
  5. Step 5: Solve for x
    x = 134,394,262,557.11/391,860.52
  6. Step 6: Final answer
    x = 342,964.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.