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Finding the Fourth Proportional to 220,888.70, 331,505.85 and 102,574.70

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Solution

The fourth proportional to 220,888.70, 331,505.85 and 102,574.70 is: 153,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,888.70 : 331,505.85 = 102,574.70 : x
  2. Step 2: Convert to fraction form
    220,888.70/331,505.85 = 102,574.70/x
  3. Step 3: Cross multiply
    220,888.70x = 331,505.85 × 102,574.70
  4. Step 4: Simplify right side
    220,888.70x = 34,004,113,112.00
  5. Step 5: Solve for x
    x = 34,004,113,112.00/220,888.70
  6. Step 6: Final answer
    x = 153,942.29

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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.