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Finding the Fourth Proportional to 242,392.15, 363,754.30 and 84,620.60

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Solution

The fourth proportional to 242,392.15, 363,754.30 and 84,620.60 is: 126,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,392.15 : 363,754.30 = 84,620.60 : x
  2. Step 2: Convert to fraction form
    242,392.15/363,754.30 = 84,620.60/x
  3. Step 3: Cross multiply
    242,392.15x = 363,754.30 × 84,620.60
  4. Step 4: Simplify right side
    242,392.15x = 30,781,107,118.58
  5. Step 5: Solve for x
    x = 30,781,107,118.58/242,392.15
  6. Step 6: Final answer
    x = 126,988.88

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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.