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Finding the Fourth Proportional to 207,937.60, 311,906.40 and 194,815.60

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Solution

The fourth proportional to 207,937.60, 311,906.40 and 194,815.60 is: 292,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,937.60 : 311,906.40 = 194,815.60 : x
  2. Step 2: Convert to fraction form
    207,937.60/311,906.40 = 194,815.60/x
  3. Step 3: Cross multiply
    207,937.60x = 311,906.40 × 194,815.60
  4. Step 4: Simplify right side
    207,937.60x = 60,764,232,459.84
  5. Step 5: Solve for x
    x = 60,764,232,459.84/207,937.60
  6. Step 6: Final answer
    x = 292,223.40

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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.