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Finding the Fourth Proportional to 220,211.81, 303,896.30 and 124,738.32

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Solution

The fourth proportional to 220,211.81, 303,896.30 and 124,738.32 is: 172,141.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,211.81 : 303,896.30 = 124,738.32 : x
  2. Step 2: Convert to fraction form
    220,211.81/303,896.30 = 124,738.32/x
  3. Step 3: Cross multiply
    220,211.81x = 303,896.30 × 124,738.32
  4. Step 4: Simplify right side
    220,211.81x = 37,907,513,292.52
  5. Step 5: Solve for x
    x = 37,907,513,292.52/220,211.81
  6. Step 6: Final answer
    x = 172,141.15

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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.