Home / 311,787.66-429,979.98-204,318.66

Finding the Fourth Proportional to 311,787.66, 429,979.98 and 204,318.66

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Solution

The fourth proportional to 311,787.66, 429,979.98 and 204,318.66 is: 281,771.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,787.66 : 429,979.98 = 204,318.66 : x
  2. Step 2: Convert to fraction form
    311,787.66/429,979.98 = 204,318.66/x
  3. Step 3: Cross multiply
    311,787.66x = 429,979.98 × 204,318.66
  4. Step 4: Simplify right side
    311,787.66x = 87,852,933,340.43
  5. Step 5: Solve for x
    x = 87,852,933,340.43/311,787.66
  6. Step 6: Final answer
    x = 281,771.68

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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.