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Finding the Fourth Proportional to 274,798.17, 379,214.87 and 153,944.55

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Solution

The fourth proportional to 274,798.17, 379,214.87 and 153,944.55 is: 212,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,798.17 : 379,214.87 = 153,944.55 : x
  2. Step 2: Convert to fraction form
    274,798.17/379,214.87 = 153,944.55/x
  3. Step 3: Cross multiply
    274,798.17x = 379,214.87 × 153,944.55
  4. Step 4: Simplify right side
    274,798.17x = 58,378,061,745.74
  5. Step 5: Solve for x
    x = 58,378,061,745.74/274,798.17
  6. Step 6: Final answer
    x = 212,439.78

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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.