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Finding the Fourth Proportional to 391,936.48, 540,970.32 and 240,946

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Solution

The fourth proportional to 391,936.48, 540,970.32 and 240,946 is: 332,565.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,936.48 : 540,970.32 = 240,946 : x
  2. Step 2: Convert to fraction form
    391,936.48/540,970.32 = 240,946/x
  3. Step 3: Cross multiply
    391,936.48x = 540,970.32 × 240,946
  4. Step 4: Simplify right side
    391,936.48x = 130,344,634,722.72
  5. Step 5: Solve for x
    x = 130,344,634,722.72/391,936.48
  6. Step 6: Final answer
    x = 332,565.71

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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.