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Finding the Fourth Proportional to 298,261.44, 447,406.20 and 87,901.20

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Solution

The fourth proportional to 298,261.44, 447,406.20 and 87,901.20 is: 131,855.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,261.44 : 447,406.20 = 87,901.20 : x
  2. Step 2: Convert to fraction form
    298,261.44/447,406.20 = 87,901.20/x
  3. Step 3: Cross multiply
    298,261.44x = 447,406.20 × 87,901.20
  4. Step 4: Simplify right side
    298,261.44x = 39,327,541,867.44
  5. Step 5: Solve for x
    x = 39,327,541,867.44/298,261.44
  6. Step 6: Final answer
    x = 131,855.94

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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.