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Finding the Fourth Proportional to 298,066.72, 447,100.08 and 87,704.73

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Solution

The fourth proportional to 298,066.72, 447,100.08 and 87,704.73 is: 131,557.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,066.72 : 447,100.08 = 87,704.73 : x
  2. Step 2: Convert to fraction form
    298,066.72/447,100.08 = 87,704.73/x
  3. Step 3: Cross multiply
    298,066.72x = 447,100.08 × 87,704.73
  4. Step 4: Simplify right side
    298,066.72x = 39,212,791,799.38
  5. Step 5: Solve for x
    x = 39,212,791,799.38/298,066.72
  6. Step 6: Final answer
    x = 131,557.10

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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.