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Finding the Fourth Proportional to 239,853.94, 359,387.22 and 81,996.28

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Solution

The fourth proportional to 239,853.94, 359,387.22 and 81,996.28 is: 122,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,853.94 : 359,387.22 = 81,996.28 : x
  2. Step 2: Convert to fraction form
    239,853.94/359,387.22 = 81,996.28/x
  3. Step 3: Cross multiply
    239,853.94x = 359,387.22 × 81,996.28
  4. Step 4: Simplify right side
    239,853.94x = 29,468,415,119.54
  5. Step 5: Solve for x
    x = 29,468,415,119.54/239,853.94
  6. Step 6: Final answer
    x = 122,859.83

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1.5x scale

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.