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Finding the Fourth Proportional to 275,066.64, 379,591.70 and 154,207.94

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Solution

The fourth proportional to 275,066.64, 379,591.70 and 154,207.94 is: 212,806.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,066.64 : 379,591.70 = 154,207.94 : x
  2. Step 2: Convert to fraction form
    275,066.64/379,591.70 = 154,207.94/x
  3. Step 3: Cross multiply
    275,066.64x = 379,591.70 × 154,207.94
  4. Step 4: Simplify right side
    275,066.64x = 58,536,051,429.10
  5. Step 5: Solve for x
    x = 58,536,051,429.10/275,066.64
  6. Step 6: Final answer
    x = 212,806.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.