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Finding the Fourth Proportional to 354,721.27, 488,683.61 and 247,096.57

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Solution

The fourth proportional to 354,721.27, 488,683.61 and 247,096.57 is: 340,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,721.27 : 488,683.61 = 247,096.57 : x
  2. Step 2: Convert to fraction form
    354,721.27/488,683.61 = 247,096.57/x
  3. Step 3: Cross multiply
    354,721.27x = 488,683.61 × 247,096.57
  4. Step 4: Simplify right side
    354,721.27x = 120,752,041,389.03
  5. Step 5: Solve for x
    x = 120,752,041,389.03/354,721.27
  6. Step 6: Final answer
    x = 340,413.88

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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.