Home / 287,301.06-396,475.21-158,240.41

Finding the Fourth Proportional to 287,301.06, 396,475.21 and 158,240.41

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Solution

The fourth proportional to 287,301.06, 396,475.21 and 158,240.41 is: 218,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,301.06 : 396,475.21 = 158,240.41 : x
  2. Step 2: Convert to fraction form
    287,301.06/396,475.21 = 158,240.41/x
  3. Step 3: Cross multiply
    287,301.06x = 396,475.21 × 158,240.41
  4. Step 4: Simplify right side
    287,301.06x = 62,738,398,991.85
  5. Step 5: Solve for x
    x = 62,738,398,991.85/287,301.06
  6. Step 6: Final answer
    x = 218,371.62

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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.