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Finding the Fourth Proportional to 228,887.34, 315,858.87 and 126,913.20

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Solution

The fourth proportional to 228,887.34, 315,858.87 and 126,913.20 is: 175,137.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,887.34 : 315,858.87 = 126,913.20 : x
  2. Step 2: Convert to fraction form
    228,887.34/315,858.87 = 126,913.20/x
  3. Step 3: Cross multiply
    228,887.34x = 315,858.87 × 126,913.20
  4. Step 4: Simplify right side
    228,887.34x = 40,086,659,940.08
  5. Step 5: Solve for x
    x = 40,086,659,940.08/228,887.34
  6. Step 6: Final answer
    x = 175,137.08

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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.