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Finding the Fourth Proportional to 391,856.29, 540,532.01 and 246,431.41

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Solution

The fourth proportional to 391,856.29, 540,532.01 and 246,431.41 is: 339,930.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,856.29 : 540,532.01 = 246,431.41 : x
  2. Step 2: Convert to fraction form
    391,856.29/540,532.01 = 246,431.41/x
  3. Step 3: Cross multiply
    391,856.29x = 540,532.01 × 246,431.41
  4. Step 4: Simplify right side
    391,856.29x = 133,204,065,374.43
  5. Step 5: Solve for x
    x = 133,204,065,374.43/391,856.29
  6. Step 6: Final answer
    x = 339,930.91

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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.