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Finding the Fourth Proportional to 207,394.60, 311,091.90 and 89,045.80

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Solution

The fourth proportional to 207,394.60, 311,091.90 and 89,045.80 is: 133,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,394.60 : 311,091.90 = 89,045.80 : x
  2. Step 2: Convert to fraction form
    207,394.60/311,091.90 = 89,045.80/x
  3. Step 3: Cross multiply
    207,394.60x = 311,091.90 × 89,045.80
  4. Step 4: Simplify right side
    207,394.60x = 27,701,427,109.02
  5. Step 5: Solve for x
    x = 27,701,427,109.02/207,394.60
  6. Step 6: Final answer
    x = 133,568.70

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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.