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Finding the Fourth Proportional to 220,896.10, 331,344.15 and 190,828.90

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Solution

The fourth proportional to 220,896.10, 331,344.15 and 190,828.90 is: 286,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,896.10 : 331,344.15 = 190,828.90 : x
  2. Step 2: Convert to fraction form
    220,896.10/331,344.15 = 190,828.90/x
  3. Step 3: Cross multiply
    220,896.10x = 331,344.15 × 190,828.90
  4. Step 4: Simplify right side
    220,896.10x = 63,230,039,665.94
  5. Step 5: Solve for x
    x = 63,230,039,665.94/220,896.10
  6. Step 6: Final answer
    x = 286,243.35

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1.5x scale

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.