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Finding the Fourth Proportional to 228,691.84, 315,594.42 and 126,723.90

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Solution

The fourth proportional to 228,691.84, 315,594.42 and 126,723.90 is: 174,878.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,691.84 : 315,594.42 = 126,723.90 : x
  2. Step 2: Convert to fraction form
    228,691.84/315,594.42 = 126,723.90/x
  3. Step 3: Cross multiply
    228,691.84x = 315,594.42 × 126,723.90
  4. Step 4: Simplify right side
    228,691.84x = 39,993,355,720.64
  5. Step 5: Solve for x
    x = 39,993,355,720.64/228,691.84
  6. Step 6: Final answer
    x = 174,878.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.