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Finding the Fourth Proportional to 285,933.20, 428,770.20 and 108,381.20

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Solution

The fourth proportional to 285,933.20, 428,770.20 and 108,381.20 is: 162,522.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,933.20 : 428,770.20 = 108,381.20 : x
  2. Step 2: Convert to fraction form
    285,933.20/428,770.20 = 108,381.20/x
  3. Step 3: Cross multiply
    285,933.20x = 428,770.20 × 108,381.20
  4. Step 4: Simplify right side
    285,933.20x = 46,470,628,800.24
  5. Step 5: Solve for x
    x = 46,470,628,800.24/285,933.20
  6. Step 6: Final answer
    x = 162,522.68

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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.