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Finding the Fourth Proportional to 159,469.28, 220,291.44 and 151,071.20

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Solution

The fourth proportional to 159,469.28, 220,291.44 and 151,071.20 is: 208,690.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,469.28 : 220,291.44 = 151,071.20 : x
  2. Step 2: Convert to fraction form
    159,469.28/220,291.44 = 151,071.20/x
  3. Step 3: Cross multiply
    159,469.28x = 220,291.44 × 151,071.20
  4. Step 4: Simplify right side
    159,469.28x = 33,279,692,190.53
  5. Step 5: Solve for x
    x = 33,279,692,190.53/159,469.28
  6. Step 6: Final answer
    x = 208,690.30

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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.