Home / 287,226.12-396,385.92-159,901.68

Finding the Fourth Proportional to 287,226.12, 396,385.92 and 159,901.68

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Solution

The fourth proportional to 287,226.12, 396,385.92 and 159,901.68 is: 220,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,226.12 : 396,385.92 = 159,901.68 : x
  2. Step 2: Convert to fraction form
    287,226.12/396,385.92 = 159,901.68/x
  3. Step 3: Cross multiply
    287,226.12x = 396,385.92 × 159,901.68
  4. Step 4: Simplify right side
    287,226.12x = 63,382,774,536.35
  5. Step 5: Solve for x
    x = 63,382,774,536.35/287,226.12
  6. Step 6: Final answer
    x = 220,672.04

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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.