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Finding the Fourth Proportional to 451,378.89, 676,990.58 and 135,751.05

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Solution

The fourth proportional to 451,378.89, 676,990.58 and 135,751.05 is: 203,603.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,378.89 : 676,990.58 = 135,751.05 : x
  2. Step 2: Convert to fraction form
    451,378.89/676,990.58 = 135,751.05/x
  3. Step 3: Cross multiply
    451,378.89x = 676,990.58 × 135,751.05
  4. Step 4: Simplify right side
    451,378.89x = 91,902,181,396.35
  5. Step 5: Solve for x
    x = 91,902,181,396.35/451,378.89
  6. Step 6: Final answer
    x = 203,603.19

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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.