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Finding the Fourth Proportional to 242,969.10, 364,344.30 and 109,780.80

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Solution

The fourth proportional to 242,969.10, 364,344.30 and 109,780.80 is: 164,621.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,969.10 : 364,344.30 = 109,780.80 : x
  2. Step 2: Convert to fraction form
    242,969.10/364,344.30 = 109,780.80/x
  3. Step 3: Cross multiply
    242,969.10x = 364,344.30 × 109,780.80
  4. Step 4: Simplify right side
    242,969.10x = 39,998,008,729.44
  5. Step 5: Solve for x
    x = 39,998,008,729.44/242,969.10
  6. Step 6: Final answer
    x = 164,621.79

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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.