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Finding the Fourth Proportional to 239,849.64, 359,380.80 and 81,991.98

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Solution

The fourth proportional to 239,849.64, 359,380.80 and 81,991.98 is: 122,853.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,849.64 : 359,380.80 = 81,991.98 : x
  2. Step 2: Convert to fraction form
    239,849.64/359,380.80 = 81,991.98/x
  3. Step 3: Cross multiply
    239,849.64x = 359,380.80 × 81,991.98
  4. Step 4: Simplify right side
    239,849.64x = 29,466,343,365.98
  5. Step 5: Solve for x
    x = 29,466,343,365.98/239,849.64
  6. Step 6: Final answer
    x = 122,853.40

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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.