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Finding the Fourth Proportional to 248,009.20, 372,008.92 and 81,797.20

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Solution

The fourth proportional to 248,009.20, 372,008.92 and 81,797.20 is: 122,694.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,009.20 : 372,008.92 = 81,797.20 : x
  2. Step 2: Convert to fraction form
    248,009.20/372,008.92 = 81,797.20/x
  3. Step 3: Cross multiply
    248,009.20x = 372,008.92 × 81,797.20
  4. Step 4: Simplify right side
    248,009.20x = 30,429,288,031.02
  5. Step 5: Solve for x
    x = 30,429,288,031.02/248,009.20
  6. Step 6: Final answer
    x = 122,694.19

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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.