Home / 287,224.12-396,383.16-159,899.68

Finding the Fourth Proportional to 287,224.12, 396,383.16 and 159,899.68

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Solution

The fourth proportional to 287,224.12, 396,383.16 and 159,899.68 is: 220,669.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,224.12 : 396,383.16 = 159,899.68 : x
  2. Step 2: Convert to fraction form
    287,224.12/396,383.16 = 159,899.68/x
  3. Step 3: Cross multiply
    287,224.12x = 396,383.16 × 159,899.68
  4. Step 4: Simplify right side
    287,224.12x = 63,381,540,441.39
  5. Step 5: Solve for x
    x = 63,381,540,441.39/287,224.12
  6. Step 6: Final answer
    x = 220,669.28

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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.