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Finding the Fourth Proportional to 207,753.59, 311,519.60 and 107,813.15

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Solution

The fourth proportional to 207,753.59, 311,519.60 and 107,813.15 is: 161,662.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,753.59 : 311,519.60 = 107,813.15 : x
  2. Step 2: Convert to fraction form
    207,753.59/311,519.60 = 107,813.15/x
  3. Step 3: Cross multiply
    207,753.59x = 311,519.60 × 107,813.15
  4. Step 4: Simplify right side
    207,753.59x = 33,585,908,823.67
  5. Step 5: Solve for x
    x = 33,585,908,823.67/207,753.59
  6. Step 6: Final answer
    x = 161,662.23

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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.