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Finding the Fourth Proportional to 228,359.72, 315,126.72 and 126,375.64

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Solution

The fourth proportional to 228,359.72, 315,126.72 and 126,375.64 is: 174,393.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,359.72 : 315,126.72 = 126,375.64 : x
  2. Step 2: Convert to fraction form
    228,359.72/315,126.72 = 126,375.64/x
  3. Step 3: Cross multiply
    228,359.72x = 315,126.72 × 126,375.64
  4. Step 4: Simplify right side
    228,359.72x = 39,824,340,133.28
  5. Step 5: Solve for x
    x = 39,824,340,133.28/228,359.72
  6. Step 6: Final answer
    x = 174,393.02

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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.