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Finding the Fourth Proportional to 391,937.48, 540,971.70 and 240,947

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Solution

The fourth proportional to 391,937.48, 540,971.70 and 240,947 is: 332,567.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,937.48 : 540,971.70 = 240,947 : x
  2. Step 2: Convert to fraction form
    391,937.48/540,971.70 = 240,947/x
  3. Step 3: Cross multiply
    391,937.48x = 540,971.70 × 240,947
  4. Step 4: Simplify right side
    391,937.48x = 130,345,508,199.90
  5. Step 5: Solve for x
    x = 130,345,508,199.90/391,937.48
  6. Step 6: Final answer
    x = 332,567.09

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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.