Home / 278,787.12-386,700.16-269,228.64

Finding the Fourth Proportional to 278,787.12, 386,700.16 and 269,228.64

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Solution

The fourth proportional to 278,787.12, 386,700.16 and 269,228.64 is: 373,441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,787.12 : 386,700.16 = 269,228.64 : x
  2. Step 2: Convert to fraction form
    278,787.12/386,700.16 = 269,228.64/x
  3. Step 3: Cross multiply
    278,787.12x = 386,700.16 × 269,228.64
  4. Step 4: Simplify right side
    278,787.12x = 104,110,758,164.58
  5. Step 5: Solve for x
    x = 104,110,758,164.58/278,787.12
  6. Step 6: Final answer
    x = 373,441.78

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.