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Finding the Fourth Proportional to 207,634.40, 311,336.40 and 89,285.60

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Solution

The fourth proportional to 207,634.40, 311,336.40 and 89,285.60 is: 133,878.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,634.40 : 311,336.40 = 89,285.60 : x
  2. Step 2: Convert to fraction form
    207,634.40/311,336.40 = 89,285.60/x
  3. Step 3: Cross multiply
    207,634.40x = 311,336.40 × 89,285.60
  4. Step 4: Simplify right side
    207,634.40x = 27,797,857,275.84
  5. Step 5: Solve for x
    x = 27,797,857,275.84/207,634.40
  6. Step 6: Final answer
    x = 133,878.86

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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.