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Finding the Fourth Proportional to 220,102.79, 303,745.77 and 123,305.76

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Solution

The fourth proportional to 220,102.79, 303,745.77 and 123,305.76 is: 170,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,102.79 : 303,745.77 = 123,305.76 : x
  2. Step 2: Convert to fraction form
    220,102.79/303,745.77 = 123,305.76/x
  3. Step 3: Cross multiply
    220,102.79x = 303,745.77 × 123,305.76
  4. Step 4: Simplify right side
    220,102.79x = 37,453,603,016.64
  5. Step 5: Solve for x
    x = 37,453,603,016.64/220,102.79
  6. Step 6: Final answer
    x = 170,164.15

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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.