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Finding the Fourth Proportional to 228,735.07, 315,645.28 and 126,764.89

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Solution

The fourth proportional to 228,735.07, 315,645.28 and 126,764.89 is: 174,930.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,735.07 : 315,645.28 = 126,764.89 : x
  2. Step 2: Convert to fraction form
    228,735.07/315,645.28 = 126,764.89/x
  3. Step 3: Cross multiply
    228,735.07x = 315,645.28 × 126,764.89
  4. Step 4: Simplify right side
    228,735.07x = 40,012,739,198.22
  5. Step 5: Solve for x
    x = 40,012,739,198.22/228,735.07
  6. Step 6: Final answer
    x = 174,930.50

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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.