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Finding the Fourth Proportional to 239,685.60, 330,872.64 and 154,844.64

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Solution

The fourth proportional to 239,685.60, 330,872.64 and 154,844.64 is: 213,754.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,685.60 : 330,872.64 = 154,844.64 : x
  2. Step 2: Convert to fraction form
    239,685.60/330,872.64 = 154,844.64/x
  3. Step 3: Cross multiply
    239,685.60x = 330,872.64 × 154,844.64
  4. Step 4: Simplify right side
    239,685.60x = 51,233,854,826.65
  5. Step 5: Solve for x
    x = 51,233,854,826.65/239,685.60
  6. Step 6: Final answer
    x = 213,754.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.