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Finding the Fourth Proportional to 258,834.60, 388,251.90 and 247,543.20

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Solution

The fourth proportional to 258,834.60, 388,251.90 and 247,543.20 is: 371,314.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,834.60 : 388,251.90 = 247,543.20 : x
  2. Step 2: Convert to fraction form
    258,834.60/388,251.90 = 247,543.20/x
  3. Step 3: Cross multiply
    258,834.60x = 388,251.90 × 247,543.20
  4. Step 4: Simplify right side
    258,834.60x = 96,109,117,732.08
  5. Step 5: Solve for x
    x = 96,109,117,732.08/258,834.60
  6. Step 6: Final answer
    x = 371,314.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.