Home / 207,440.72-311,281.80-87,490.16

Finding the Fourth Proportional to 207,440.72, 311,281.80 and 87,490.16

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Solution

The fourth proportional to 207,440.72, 311,281.80 and 87,490.16 is: 131,286.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,440.72 : 311,281.80 = 87,490.16 : x
  2. Step 2: Convert to fraction form
    207,440.72/311,281.80 = 87,490.16/x
  3. Step 3: Cross multiply
    207,440.72x = 311,281.80 × 87,490.16
  4. Step 4: Simplify right side
    207,440.72x = 27,234,094,487.09
  5. Step 5: Solve for x
    x = 27,234,094,487.09/207,440.72
  6. Step 6: Final answer
    x = 131,286.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.