Home / 287,520.19-396,780.55-158,463.27

Finding the Fourth Proportional to 287,520.19, 396,780.55 and 158,463.27

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Solution

The fourth proportional to 287,520.19, 396,780.55 and 158,463.27 is: 218,680.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,520.19 : 396,780.55 = 158,463.27 : x
  2. Step 2: Convert to fraction form
    287,520.19/396,780.55 = 158,463.27/x
  3. Step 3: Cross multiply
    287,520.19x = 396,780.55 × 158,463.27
  4. Step 4: Simplify right side
    287,520.19x = 62,875,143,029.24
  5. Step 5: Solve for x
    x = 62,875,143,029.24/287,520.19
  6. Step 6: Final answer
    x = 218,680.79

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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.