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Finding the Fourth Proportional to 207,634.80, 311,452.20 and 155,146.80

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Solution

The fourth proportional to 207,634.80, 311,452.20 and 155,146.80 is: 232,720.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,634.80 : 311,452.20 = 155,146.80 : x
  2. Step 2: Convert to fraction form
    207,634.80/311,452.20 = 155,146.80/x
  3. Step 3: Cross multiply
    207,634.80x = 311,452.20 × 155,146.80
  4. Step 4: Simplify right side
    207,634.80x = 48,320,812,182.96
  5. Step 5: Solve for x
    x = 48,320,812,182.96/207,634.80
  6. Step 6: Final answer
    x = 232,720.20

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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.