Home / 287,314.68-396,521.82-159,990.24

Finding the Fourth Proportional to 287,314.68, 396,521.82 and 159,990.24

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Solution

The fourth proportional to 287,314.68, 396,521.82 and 159,990.24 is: 220,801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,314.68 : 396,521.82 = 159,990.24 : x
  2. Step 2: Convert to fraction form
    287,314.68/396,521.82 = 159,990.24/x
  3. Step 3: Cross multiply
    287,314.68x = 396,521.82 × 159,990.24
  4. Step 4: Simplify right side
    287,314.68x = 63,439,621,147.04
  5. Step 5: Solve for x
    x = 63,439,621,147.04/287,314.68
  6. Step 6: Final answer
    x = 220,801.88

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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.