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Finding the Fourth Proportional to 274,279.90, 411,419.85 and 168,756.70

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Solution

The fourth proportional to 274,279.90, 411,419.85 and 168,756.70 is: 253,135.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,279.90 : 411,419.85 = 168,756.70 : x
  2. Step 2: Convert to fraction form
    274,279.90/411,419.85 = 168,756.70/x
  3. Step 3: Cross multiply
    274,279.90x = 411,419.85 × 168,756.70
  4. Step 4: Simplify right side
    274,279.90x = 69,429,856,200.50
  5. Step 5: Solve for x
    x = 69,429,856,200.50/274,279.90
  6. Step 6: Final answer
    x = 253,135.05

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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.