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Finding the Fourth Proportional to 228,940.89, 315,954.36 and 126,975.66

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Solution

The fourth proportional to 228,940.89, 315,954.36 and 126,975.66 is: 175,235.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,940.89 : 315,954.36 = 126,975.66 : x
  2. Step 2: Convert to fraction form
    228,940.89/315,954.36 = 126,975.66/x
  3. Step 3: Cross multiply
    228,940.89x = 315,954.36 × 126,975.66
  4. Step 4: Simplify right side
    228,940.89x = 40,118,513,390.88
  5. Step 5: Solve for x
    x = 40,118,513,390.88/228,940.89
  6. Step 6: Final answer
    x = 175,235.25

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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.