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Finding the Fourth Proportional to 220,640.54, 304,485.28 and 120,039.26

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Solution

The fourth proportional to 220,640.54, 304,485.28 and 120,039.26 is: 165,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,640.54 : 304,485.28 = 120,039.26 : x
  2. Step 2: Convert to fraction form
    220,640.54/304,485.28 = 120,039.26/x
  3. Step 3: Cross multiply
    220,640.54x = 304,485.28 × 120,039.26
  4. Step 4: Simplify right side
    220,640.54x = 36,550,187,692.09
  5. Step 5: Solve for x
    x = 36,550,187,692.09/220,640.54
  6. Step 6: Final answer
    x = 165,654.90

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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.