Home / 287,520.26-396,780.64-158,463.33

Finding the Fourth Proportional to 287,520.26, 396,780.64 and 158,463.33

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Solution

The fourth proportional to 287,520.26, 396,780.64 and 158,463.33 is: 218,680.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,520.26 : 396,780.64 = 158,463.33 : x
  2. Step 2: Convert to fraction form
    287,520.26/396,780.64 = 158,463.33/x
  3. Step 3: Cross multiply
    287,520.26x = 396,780.64 × 158,463.33
  4. Step 4: Simplify right side
    287,520.26x = 62,875,181,493.93
  5. Step 5: Solve for x
    x = 62,875,181,493.93/287,520.26
  6. Step 6: Final answer
    x = 218,680.87

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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.