Home / 287,072.06-396,156.33-158,007.78

Finding the Fourth Proportional to 287,072.06, 396,156.33 and 158,007.78

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Solution

The fourth proportional to 287,072.06, 396,156.33 and 158,007.78 is: 218,049.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,072.06 : 396,156.33 = 158,007.78 : x
  2. Step 2: Convert to fraction form
    287,072.06/396,156.33 = 158,007.78/x
  3. Step 3: Cross multiply
    287,072.06x = 396,156.33 × 158,007.78
  4. Step 4: Simplify right side
    287,072.06x = 62,595,782,236.25
  5. Step 5: Solve for x
    x = 62,595,782,236.25/287,072.06
  6. Step 6: Final answer
    x = 218,049.02

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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.