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Finding the Fourth Proportional to 207,670.40, 311,651.40 and 89,426.60

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Solution

The fourth proportional to 207,670.40, 311,651.40 and 89,426.60 is: 134,202.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,670.40 : 311,651.40 = 89,426.60 : x
  2. Step 2: Convert to fraction form
    207,670.40/311,651.40 = 89,426.60/x
  3. Step 3: Cross multiply
    207,670.40x = 311,651.40 × 89,426.60
  4. Step 4: Simplify right side
    207,670.40x = 27,869,925,087.24
  5. Step 5: Solve for x
    x = 27,869,925,087.24/207,670.40
  6. Step 6: Final answer
    x = 134,202.68

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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.