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Finding the Fourth Proportional to 274,982.88, 412,466.76 and 87,991.68

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Solution

The fourth proportional to 274,982.88, 412,466.76 and 87,991.68 is: 131,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,982.88 : 412,466.76 = 87,991.68 : x
  2. Step 2: Convert to fraction form
    274,982.88/412,466.76 = 87,991.68/x
  3. Step 3: Cross multiply
    274,982.88x = 412,466.76 × 87,991.68
  4. Step 4: Simplify right side
    274,982.88x = 36,293,643,156.56
  5. Step 5: Solve for x
    x = 36,293,643,156.56/274,982.88
  6. Step 6: Final answer
    x = 131,985.10

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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.