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Finding the Fourth Proportional to 274,366.77, 378,640.87 and 153,500.87

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Solution

The fourth proportional to 274,366.77, 378,640.87 and 153,500.87 is: 211,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,366.77 : 378,640.87 = 153,500.87 : x
  2. Step 2: Convert to fraction form
    274,366.77/378,640.87 = 153,500.87/x
  3. Step 3: Cross multiply
    274,366.77x = 378,640.87 × 153,500.87
  4. Step 4: Simplify right side
    274,366.77x = 58,121,700,685.60
  5. Step 5: Solve for x
    x = 58,121,700,685.60/274,366.77
  6. Step 6: Final answer
    x = 211,839.43

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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.