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Finding the Fourth Proportional to 220,224.98, 303,905.29 and 128,338.37

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Solution

The fourth proportional to 220,224.98, 303,905.29 and 128,338.37 is: 177,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,224.98 : 303,905.29 = 128,338.37 : x
  2. Step 2: Convert to fraction form
    220,224.98/303,905.29 = 128,338.37/x
  3. Step 3: Cross multiply
    220,224.98x = 303,905.29 × 128,338.37
  4. Step 4: Simplify right side
    220,224.98x = 39,002,708,911.29
  5. Step 5: Solve for x
    x = 39,002,708,911.29/220,224.98
  6. Step 6: Final answer
    x = 177,103.93

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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.