Home / 311,872.32-430,383.06-168,631.92

Finding the Fourth Proportional to 311,872.32, 430,383.06 and 168,631.92

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Solution

The fourth proportional to 311,872.32, 430,383.06 and 168,631.92 is: 232,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,872.32 : 430,383.06 = 168,631.92 : x
  2. Step 2: Convert to fraction form
    311,872.32/430,383.06 = 168,631.92/x
  3. Step 3: Cross multiply
    311,872.32x = 430,383.06 × 168,631.92
  4. Step 4: Simplify right side
    311,872.32x = 72,576,321,743.28
  5. Step 5: Solve for x
    x = 72,576,321,743.28/311,872.32
  6. Step 6: Final answer
    x = 232,711.65

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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.