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Finding the Fourth Proportional to 247,739.60, 371,661.24 and 81,506

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Solution

The fourth proportional to 247,739.60, 371,661.24 and 81,506 is: 122,276.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,739.60 : 371,661.24 = 81,506 : x
  2. Step 2: Convert to fraction form
    247,739.60/371,661.24 = 81,506/x
  3. Step 3: Cross multiply
    247,739.60x = 371,661.24 × 81,506
  4. Step 4: Simplify right side
    247,739.60x = 30,292,621,027.44
  5. Step 5: Solve for x
    x = 30,292,621,027.44/247,739.60
  6. Step 6: Final answer
    x = 122,276.06

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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.