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Finding the Fourth Proportional to 451,310.82, 676,980.81 and 135,770.46

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Solution

The fourth proportional to 451,310.82, 676,980.81 and 135,770.46 is: 203,660.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,310.82 : 676,980.81 = 135,770.46 : x
  2. Step 2: Convert to fraction form
    451,310.82/676,980.81 = 135,770.46/x
  3. Step 3: Cross multiply
    451,310.82x = 676,980.81 × 135,770.46
  4. Step 4: Simplify right side
    451,310.82x = 91,913,995,984.87
  5. Step 5: Solve for x
    x = 91,913,995,984.87/451,310.82
  6. Step 6: Final answer
    x = 203,660.08

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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.