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Finding the Fourth Proportional to 242,645.80, 363,839.10 and 102,245.80

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Solution

The fourth proportional to 242,645.80, 363,839.10 and 102,245.80 is: 153,314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,645.80 : 363,839.10 = 102,245.80 : x
  2. Step 2: Convert to fraction form
    242,645.80/363,839.10 = 102,245.80/x
  3. Step 3: Cross multiply
    242,645.80x = 363,839.10 × 102,245.80
  4. Step 4: Simplify right side
    242,645.80x = 37,201,019,850.78
  5. Step 5: Solve for x
    x = 37,201,019,850.78/242,645.80
  6. Step 6: Final answer
    x = 153,314.09

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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.