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Finding the Fourth Proportional to 488,998.10, 674,816.91 and 274,138.20

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Solution

The fourth proportional to 488,998.10, 674,816.91 and 274,138.20 is: 378,310.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,998.10 : 674,816.91 = 274,138.20 : x
  2. Step 2: Convert to fraction form
    488,998.10/674,816.91 = 274,138.20/x
  3. Step 3: Cross multiply
    488,998.10x = 674,816.91 × 274,138.20
  4. Step 4: Simplify right side
    488,998.10x = 184,993,093,036.96
  5. Step 5: Solve for x
    x = 184,993,093,036.96/488,998.10
  6. Step 6: Final answer
    x = 378,310.46

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1.5x scale

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.