Home / 239,789.80-330,792.42-154,979.56

Finding the Fourth Proportional to 239,789.80, 330,792.42 and 154,979.56

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Solution

The fourth proportional to 239,789.80, 330,792.42 and 154,979.56 is: 213,795.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,789.80 : 330,792.42 = 154,979.56 : x
  2. Step 2: Convert to fraction form
    239,789.80/330,792.42 = 154,979.56/x
  3. Step 3: Cross multiply
    239,789.80x = 330,792.42 × 154,979.56
  4. Step 4: Simplify right side
    239,789.80x = 51,266,063,702.94
  5. Step 5: Solve for x
    x = 51,266,063,702.94/239,789.80
  6. Step 6: Final answer
    x = 213,795.85

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1.5x scale

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.