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Finding the Fourth Proportional to 393,768.53, 543,386.13 and 240,749.61

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Solution

The fourth proportional to 393,768.53, 543,386.13 and 240,749.61 is: 332,225.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,768.53 : 543,386.13 = 240,749.61 : x
  2. Step 2: Convert to fraction form
    393,768.53/543,386.13 = 240,749.61/x
  3. Step 3: Cross multiply
    393,768.53x = 543,386.13 × 240,749.61
  4. Step 4: Simplify right side
    393,768.53x = 130,819,998,876.91
  5. Step 5: Solve for x
    x = 130,819,998,876.91/393,768.53
  6. Step 6: Final answer
    x = 332,225.63

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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.