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Finding the Fourth Proportional to 250,511.68, 345,727.92 and 137,356.48

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Solution

The fourth proportional to 250,511.68, 345,727.92 and 137,356.48 is: 189,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,511.68 : 345,727.92 = 137,356.48 : x
  2. Step 2: Convert to fraction form
    250,511.68/345,727.92 = 137,356.48/x
  3. Step 3: Cross multiply
    250,511.68x = 345,727.92 × 137,356.48
  4. Step 4: Simplify right side
    250,511.68x = 47,487,970,128.92
  5. Step 5: Solve for x
    x = 47,487,970,128.92/250,511.68
  6. Step 6: Final answer
    x = 189,563.90

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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.