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Finding the Fourth Proportional to 220,270.80, 303,954.86 and 122,157.20

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Solution

The fourth proportional to 220,270.80, 303,954.86 and 122,157.20 is: 168,566.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,270.80 : 303,954.86 = 122,157.20 : x
  2. Step 2: Convert to fraction form
    220,270.80/303,954.86 = 122,157.20/x
  3. Step 3: Cross multiply
    220,270.80x = 303,954.86 × 122,157.20
  4. Step 4: Simplify right side
    220,270.80x = 37,130,274,623.99
  5. Step 5: Solve for x
    x = 37,130,274,623.99/220,270.80
  6. Step 6: Final answer
    x = 168,566.49

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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.