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Finding the Fourth Proportional to 253,065.43, 379,703.65 and 111,012.66

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Solution

The fourth proportional to 253,065.43, 379,703.65 and 111,012.66 is: 166,565.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,065.43 : 379,703.65 = 111,012.66 : x
  2. Step 2: Convert to fraction form
    253,065.43/379,703.65 = 111,012.66/x
  3. Step 3: Cross multiply
    253,065.43x = 379,703.65 × 111,012.66
  4. Step 4: Simplify right side
    253,065.43x = 42,151,912,198.21
  5. Step 5: Solve for x
    x = 42,151,912,198.21/253,065.43
  6. Step 6: Final answer
    x = 166,565.27

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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.