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Finding the Fourth Proportional to 272,645.42, 408,904.55 and 104,103.86

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Solution

The fourth proportional to 272,645.42, 408,904.55 and 104,103.86 is: 156,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,645.42 : 408,904.55 = 104,103.86 : x
  2. Step 2: Convert to fraction form
    272,645.42/408,904.55 = 104,103.86/x
  3. Step 3: Cross multiply
    272,645.42x = 408,904.55 × 104,103.86
  4. Step 4: Simplify right side
    272,645.42x = 42,568,541,506.04
  5. Step 5: Solve for x
    x = 42,568,541,506.04/272,645.42
  6. Step 6: Final answer
    x = 156,131.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.