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Finding the Fourth Proportional to 298,647.88, 447,960.60 and 74,008.96

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Solution

The fourth proportional to 298,647.88, 447,960.60 and 74,008.96 is: 111,010.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,647.88 : 447,960.60 = 74,008.96 : x
  2. Step 2: Convert to fraction form
    298,647.88/447,960.60 = 74,008.96/x
  3. Step 3: Cross multiply
    298,647.88x = 447,960.60 × 74,008.96
  4. Step 4: Simplify right side
    298,647.88x = 33,153,098,126.98
  5. Step 5: Solve for x
    x = 33,153,098,126.98/298,647.88
  6. Step 6: Final answer
    x = 111,010.66

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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.