Home / 287,078.24-396,165.12-159,751.64

Finding the Fourth Proportional to 287,078.24, 396,165.12 and 159,751.64

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Solution

The fourth proportional to 287,078.24, 396,165.12 and 159,751.64 is: 220,455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,078.24 : 396,165.12 = 159,751.64 : x
  2. Step 2: Convert to fraction form
    287,078.24/396,165.12 = 159,751.64/x
  3. Step 3: Cross multiply
    287,078.24x = 396,165.12 × 159,751.64
  4. Step 4: Simplify right side
    287,078.24x = 63,288,027,630.80
  5. Step 5: Solve for x
    x = 63,288,027,630.80/287,078.24
  6. Step 6: Final answer
    x = 220,455.68

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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.