Home / 321,795.20-482,764.55-105,663.56

Finding the Fourth Proportional to 321,795.20, 482,764.55 and 105,663.56

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Solution

The fourth proportional to 321,795.20, 482,764.55 and 105,663.56 is: 158,518.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,795.20 : 482,764.55 = 105,663.56 : x
  2. Step 2: Convert to fraction form
    321,795.20/482,764.55 = 105,663.56/x
  3. Step 3: Cross multiply
    321,795.20x = 482,764.55 × 105,663.56
  4. Step 4: Simplify right side
    321,795.20x = 51,010,618,052.66
  5. Step 5: Solve for x
    x = 51,010,618,052.66/321,795.20
  6. Step 6: Final answer
    x = 158,518.89

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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.