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Finding the Fourth Proportional to 220,163.70, 303,918.93 and 148,640.61

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Solution

The fourth proportional to 220,163.70, 303,918.93 and 148,640.61 is: 205,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,163.70 : 303,918.93 = 148,640.61 : x
  2. Step 2: Convert to fraction form
    220,163.70/303,918.93 = 148,640.61/x
  3. Step 3: Cross multiply
    220,163.70x = 303,918.93 × 148,640.61
  4. Step 4: Simplify right side
    220,163.70x = 45,174,695,145.75
  5. Step 5: Solve for x
    x = 45,174,695,145.75/220,163.70
  6. Step 6: Final answer
    x = 205,186.85

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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.