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Finding the Fourth Proportional to 228,558.42, 315,401.90 and 125,190.96

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Solution

The fourth proportional to 228,558.42, 315,401.90 and 125,190.96 is: 172,758.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,558.42 : 315,401.90 = 125,190.96 : x
  2. Step 2: Convert to fraction form
    228,558.42/315,401.90 = 125,190.96/x
  3. Step 3: Cross multiply
    228,558.42x = 315,401.90 × 125,190.96
  4. Step 4: Simplify right side
    228,558.42x = 39,485,466,646.82
  5. Step 5: Solve for x
    x = 39,485,466,646.82/228,558.42
  6. Step 6: Final answer
    x = 172,758.75

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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.