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Finding the Fourth Proportional to 228,318.44, 315,062.34 and 127,697

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Solution

The fourth proportional to 228,318.44, 315,062.34 and 127,697 is: 176,212.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,318.44 : 315,062.34 = 127,697 : x
  2. Step 2: Convert to fraction form
    228,318.44/315,062.34 = 127,697/x
  3. Step 3: Cross multiply
    228,318.44x = 315,062.34 × 127,697
  4. Step 4: Simplify right side
    228,318.44x = 40,232,515,630.98
  5. Step 5: Solve for x
    x = 40,232,515,630.98/228,318.44
  6. Step 6: Final answer
    x = 176,212.29

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1.5x scale

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.