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Finding the Fourth Proportional to 207,230.70, 311,010.09 and 80,931.45

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Solution

The fourth proportional to 207,230.70, 311,010.09 and 80,931.45 is: 121,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,230.70 : 311,010.09 = 80,931.45 : x
  2. Step 2: Convert to fraction form
    207,230.70/311,010.09 = 80,931.45/x
  3. Step 3: Cross multiply
    207,230.70x = 311,010.09 × 80,931.45
  4. Step 4: Simplify right side
    207,230.70x = 25,170,497,548.33
  5. Step 5: Solve for x
    x = 25,170,497,548.33/207,230.70
  6. Step 6: Final answer
    x = 121,461.24

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1.5x scale

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.