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Finding the Fourth Proportional to 239,621.31, 330,676.95 and 130,725.65

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Solution

The fourth proportional to 239,621.31, 330,676.95 and 130,725.65 is: 180,401.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,621.31 : 330,676.95 = 130,725.65 : x
  2. Step 2: Convert to fraction form
    239,621.31/330,676.95 = 130,725.65/x
  3. Step 3: Cross multiply
    239,621.31x = 330,676.95 × 130,725.65
  4. Step 4: Simplify right side
    239,621.31x = 43,227,960,545.68
  5. Step 5: Solve for x
    x = 43,227,960,545.68/239,621.31
  6. Step 6: Final answer
    x = 180,401.15

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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.