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Finding the Fourth Proportional to 220,707.43, 331,029.28 and 70,928.17

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Solution

The fourth proportional to 220,707.43, 331,029.28 and 70,928.17 is: 106,382.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,707.43 : 331,029.28 = 70,928.17 : x
  2. Step 2: Convert to fraction form
    220,707.43/331,029.28 = 70,928.17/x
  3. Step 3: Cross multiply
    220,707.43x = 331,029.28 × 70,928.17
  4. Step 4: Simplify right side
    220,707.43x = 23,479,301,046.82
  5. Step 5: Solve for x
    x = 23,479,301,046.82/220,707.43
  6. Step 6: Final answer
    x = 106,382.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.