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Finding the Fourth Proportional to 393,046.43, 542,246.60 and 247,804.41

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Solution

The fourth proportional to 393,046.43, 542,246.60 and 247,804.41 is: 341,870.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,046.43 : 542,246.60 = 247,804.41 : x
  2. Step 2: Convert to fraction form
    393,046.43/542,246.60 = 247,804.41/x
  3. Step 3: Cross multiply
    393,046.43x = 542,246.60 × 247,804.41
  4. Step 4: Simplify right side
    393,046.43x = 134,371,101,440.44
  5. Step 5: Solve for x
    x = 134,371,101,440.44/393,046.43
  6. Step 6: Final answer
    x = 341,870.81

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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.