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Finding the Fourth Proportional to 228,851.55, 315,833.85 and 126,909

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Solution

The fourth proportional to 228,851.55, 315,833.85 and 126,909 is: 175,144.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,851.55 : 315,833.85 = 126,909 : x
  2. Step 2: Convert to fraction form
    228,851.55/315,833.85 = 126,909/x
  3. Step 3: Cross multiply
    228,851.55x = 315,833.85 × 126,909
  4. Step 4: Simplify right side
    228,851.55x = 40,082,158,069.65
  5. Step 5: Solve for x
    x = 40,082,158,069.65/228,851.55
  6. Step 6: Final answer
    x = 175,144.80

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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.