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Finding the Fourth Proportional to 207,674.40, 311,396.40 and 89,325.60

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Solution

The fourth proportional to 207,674.40, 311,396.40 and 89,325.60 is: 133,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,674.40 : 311,396.40 = 89,325.60 : x
  2. Step 2: Convert to fraction form
    207,674.40/311,396.40 = 89,325.60/x
  3. Step 3: Cross multiply
    207,674.40x = 311,396.40 × 89,325.60
  4. Step 4: Simplify right side
    207,674.40x = 27,815,670,267.84
  5. Step 5: Solve for x
    x = 27,815,670,267.84/207,674.40
  6. Step 6: Final answer
    x = 133,938.85

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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.