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Finding the Fourth Proportional to 488,998.85, 674,817.95 and 274,138.97

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Solution

The fourth proportional to 488,998.85, 674,817.95 and 274,138.97 is: 378,311.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,998.85 : 674,817.95 = 274,138.97 : x
  2. Step 2: Convert to fraction form
    488,998.85/674,817.95 = 274,138.97/x
  3. Step 3: Cross multiply
    488,998.85x = 674,817.95 × 274,138.97
  4. Step 4: Simplify right side
    488,998.85x = 184,993,895,061.77
  5. Step 5: Solve for x
    x = 184,993,895,061.77/488,998.85
  6. Step 6: Final answer
    x = 378,311.52

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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.