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Finding the Fourth Proportional to 391,935.48, 540,968.94 and 240,945

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Solution

The fourth proportional to 391,935.48, 540,968.94 and 240,945 is: 332,564.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,935.48 : 540,968.94 = 240,945 : x
  2. Step 2: Convert to fraction form
    391,935.48/540,968.94 = 240,945/x
  3. Step 3: Cross multiply
    391,935.48x = 540,968.94 × 240,945
  4. Step 4: Simplify right side
    391,935.48x = 130,343,761,248.30
  5. Step 5: Solve for x
    x = 130,343,761,248.30/391,935.48
  6. Step 6: Final answer
    x = 332,564.33

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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.