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Finding the Fourth Proportional to 242,392.21, 363,754.39 and 84,620.66

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Solution

The fourth proportional to 242,392.21, 363,754.39 and 84,620.66 is: 126,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,392.21 : 363,754.39 = 84,620.66 : x
  2. Step 2: Convert to fraction form
    242,392.21/363,754.39 = 84,620.66/x
  3. Step 3: Cross multiply
    242,392.21x = 363,754.39 × 84,620.66
  4. Step 4: Simplify right side
    242,392.21x = 30,781,136,136.59
  5. Step 5: Solve for x
    x = 30,781,136,136.59/242,392.21
  6. Step 6: Final answer
    x = 126,988.97

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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.