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Finding the Fourth Proportional to 391,640.60, 540,641.08 and 246,659.43

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Solution

The fourth proportional to 391,640.60, 540,641.08 and 246,659.43 is: 340,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,640.60 : 540,641.08 = 246,659.43 : x
  2. Step 2: Convert to fraction form
    391,640.60/540,641.08 = 246,659.43/x
  3. Step 3: Cross multiply
    391,640.60x = 540,641.08 × 246,659.43
  4. Step 4: Simplify right side
    391,640.60x = 133,354,219,394.09
  5. Step 5: Solve for x
    x = 133,354,219,394.09/391,640.60
  6. Step 6: Final answer
    x = 340,501.52

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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.