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Finding the Fourth Proportional to 274,952.88, 412,421.76 and 87,961.68

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Solution

The fourth proportional to 274,952.88, 412,421.76 and 87,961.68 is: 131,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,952.88 : 412,421.76 = 87,961.68 : x
  2. Step 2: Convert to fraction form
    274,952.88/412,421.76 = 87,961.68/x
  3. Step 3: Cross multiply
    274,952.88x = 412,421.76 × 87,961.68
  4. Step 4: Simplify right side
    274,952.88x = 36,277,310,878.16
  5. Step 5: Solve for x
    x = 36,277,310,878.16/274,952.88
  6. Step 6: Final answer
    x = 131,940.10

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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.