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Finding the Fourth Proportional to 274,797, 379,219.86 and 155,565

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Solution

The fourth proportional to 274,797, 379,219.86 and 155,565 is: 214,679.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,797 : 379,219.86 = 155,565 : x
  2. Step 2: Convert to fraction form
    274,797/379,219.86 = 155,565/x
  3. Step 3: Cross multiply
    274,797x = 379,219.86 × 155,565
  4. Step 4: Simplify right side
    274,797x = 58,993,337,520.90
  5. Step 5: Solve for x
    x = 58,993,337,520.90/274,797
  6. Step 6: Final answer
    x = 214,679.70

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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.