Home / 287,181.47-396,432.96-204,448.78

Finding the Fourth Proportional to 287,181.47, 396,432.96 and 204,448.78

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Solution

The fourth proportional to 287,181.47, 396,432.96 and 204,448.78 is: 282,226.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,181.47 : 396,432.96 = 204,448.78 : x
  2. Step 2: Convert to fraction form
    287,181.47/396,432.96 = 204,448.78/x
  3. Step 3: Cross multiply
    287,181.47x = 396,432.96 × 204,448.78
  4. Step 4: Simplify right side
    287,181.47x = 81,050,235,023.79
  5. Step 5: Solve for x
    x = 81,050,235,023.79/287,181.47
  6. Step 6: Final answer
    x = 282,226.55

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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.