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Finding the Fourth Proportional to 274,685.45, 411,972.68 and 191,204.96

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Solution

The fourth proportional to 274,685.45, 411,972.68 and 191,204.96 is: 286,768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,685.45 : 411,972.68 = 191,204.96 : x
  2. Step 2: Convert to fraction form
    274,685.45/411,972.68 = 191,204.96/x
  3. Step 3: Cross multiply
    274,685.45x = 411,972.68 × 191,204.96
  4. Step 4: Simplify right side
    274,685.45x = 78,771,218,218.64
  5. Step 5: Solve for x
    x = 78,771,218,218.64/274,685.45
  6. Step 6: Final answer
    x = 286,768.81

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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.