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Finding the Fourth Proportional to 203,760.16, 305,640.24 and 70,640.56

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Solution

The fourth proportional to 203,760.16, 305,640.24 and 70,640.56 is: 105,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,760.16 : 305,640.24 = 70,640.56 : x
  2. Step 2: Convert to fraction form
    203,760.16/305,640.24 = 70,640.56/x
  3. Step 3: Cross multiply
    203,760.16x = 305,640.24 × 70,640.56
  4. Step 4: Simplify right side
    203,760.16x = 21,590,597,712.13
  5. Step 5: Solve for x
    x = 21,590,597,712.13/203,760.16
  6. Step 6: Final answer
    x = 105,960.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.