Home / 228,391.11-315,172.89-126,420.75

Finding the Fourth Proportional to 228,391.11, 315,172.89 and 126,420.75

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Solution

The fourth proportional to 228,391.11, 315,172.89 and 126,420.75 is: 174,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,391.11 : 315,172.89 = 126,420.75 : x
  2. Step 2: Convert to fraction form
    228,391.11/315,172.89 = 126,420.75/x
  3. Step 3: Cross multiply
    228,391.11x = 315,172.89 × 126,420.75
  4. Step 4: Simplify right side
    228,391.11x = 39,844,393,133.47
  5. Step 5: Solve for x
    x = 39,844,393,133.47/228,391.11
  6. Step 6: Final answer
    x = 174,456.85

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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.