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Finding the Fourth Proportional to 221,758.16, 305,950.37 and 126,240.93

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Solution

The fourth proportional to 221,758.16, 305,950.37 and 126,240.93 is: 174,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,758.16 : 305,950.37 = 126,240.93 : x
  2. Step 2: Convert to fraction form
    221,758.16/305,950.37 = 126,240.93/x
  3. Step 3: Cross multiply
    221,758.16x = 305,950.37 × 126,240.93
  4. Step 4: Simplify right side
    221,758.16x = 38,623,458,611.44
  5. Step 5: Solve for x
    x = 38,623,458,611.44/221,758.16
  6. Step 6: Final answer
    x = 174,169.28

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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.