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Finding the Fourth Proportional to 228,899.21, 315,879.35 and 126,924.62

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Solution

The fourth proportional to 228,899.21, 315,879.35 and 126,924.62 is: 175,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,899.21 : 315,879.35 = 126,924.62 : x
  2. Step 2: Convert to fraction form
    228,899.21/315,879.35 = 126,924.62/x
  3. Step 3: Cross multiply
    228,899.21x = 315,879.35 × 126,924.62
  4. Step 4: Simplify right side
    228,899.21x = 40,092,864,250.58
  5. Step 5: Solve for x
    x = 40,092,864,250.58/228,899.21
  6. Step 6: Final answer
    x = 175,155.10

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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.