Home / 287,043.75-396,120.38-159,727.55

Finding the Fourth Proportional to 287,043.75, 396,120.38 and 159,727.55

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Solution

The fourth proportional to 287,043.75, 396,120.38 and 159,727.55 is: 220,424.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,043.75 : 396,120.38 = 159,727.55 : x
  2. Step 2: Convert to fraction form
    287,043.75/396,120.38 = 159,727.55/x
  3. Step 3: Cross multiply
    287,043.75x = 396,120.38 × 159,727.55
  4. Step 4: Simplify right side
    287,043.75x = 63,271,335,023.23
  5. Step 5: Solve for x
    x = 63,271,335,023.23/287,043.75
  6. Step 6: Final answer
    x = 220,424.01

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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.