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Finding the Fourth Proportional to 274,278.90, 411,418.35 and 168,755.70

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Solution

The fourth proportional to 274,278.90, 411,418.35 and 168,755.70 is: 253,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,278.90 : 411,418.35 = 168,755.70 : x
  2. Step 2: Convert to fraction form
    274,278.90/411,418.35 = 168,755.70/x
  3. Step 3: Cross multiply
    274,278.90x = 411,418.35 × 168,755.70
  4. Step 4: Simplify right side
    274,278.90x = 69,429,191,647.10
  5. Step 5: Solve for x
    x = 69,429,191,647.10/274,278.90
  6. Step 6: Final answer
    x = 253,133.55

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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.