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Finding the Fourth Proportional to 239,939.84, 359,872.84 and 80,018.58

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Solution

The fourth proportional to 239,939.84, 359,872.84 and 80,018.58 is: 120,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,939.84 : 359,872.84 = 80,018.58 : x
  2. Step 2: Convert to fraction form
    239,939.84/359,872.84 = 80,018.58/x
  3. Step 3: Cross multiply
    239,939.84x = 359,872.84 × 80,018.58
  4. Step 4: Simplify right side
    239,939.84x = 28,796,513,637.37
  5. Step 5: Solve for x
    x = 28,796,513,637.37/239,939.84
  6. Step 6: Final answer
    x = 120,015.56

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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.