Home / 287,192.10-396,433.55-225,778.08

Finding the Fourth Proportional to 287,192.10, 396,433.55 and 225,778.08

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Solution

The fourth proportional to 287,192.10, 396,433.55 and 225,778.08 is: 311,659.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,192.10 : 396,433.55 = 225,778.08 : x
  2. Step 2: Convert to fraction form
    287,192.10/396,433.55 = 225,778.08/x
  3. Step 3: Cross multiply
    287,192.10x = 396,433.55 × 225,778.08
  4. Step 4: Simplify right side
    287,192.10x = 89,506,005,766.58
  5. Step 5: Solve for x
    x = 89,506,005,766.58/287,192.10
  6. Step 6: Final answer
    x = 311,659.01

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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.