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Finding the Fourth Proportional to 265,931.88, 398,972.88 and 108,273.48

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Solution

The fourth proportional to 265,931.88, 398,972.88 and 108,273.48 is: 162,440.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,931.88 : 398,972.88 = 108,273.48 : x
  2. Step 2: Convert to fraction form
    265,931.88/398,972.88 = 108,273.48/x
  3. Step 3: Cross multiply
    265,931.88x = 398,972.88 × 108,273.48
  4. Step 4: Simplify right side
    265,931.88x = 43,198,182,143.22
  5. Step 5: Solve for x
    x = 43,198,182,143.22/265,931.88
  6. Step 6: Final answer
    x = 162,440.78

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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.