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Finding the Fourth Proportional to 228,704.66, 315,619.35 and 126,720.59

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Solution

The fourth proportional to 228,704.66, 315,619.35 and 126,720.59 is: 174,878.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,704.66 : 315,619.35 = 126,720.59 : x
  2. Step 2: Convert to fraction form
    228,704.66/315,619.35 = 126,720.59/x
  3. Step 3: Cross multiply
    228,704.66x = 315,619.35 × 126,720.59
  4. Step 4: Simplify right side
    228,704.66x = 39,995,468,194.12
  5. Step 5: Solve for x
    x = 39,995,468,194.12/228,704.66
  6. Step 6: Final answer
    x = 174,878.24

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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.