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Finding the Fourth Proportional to 303,820.56, 455,767.20 and 126,447.48

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Solution

The fourth proportional to 303,820.56, 455,767.20 and 126,447.48 is: 189,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,820.56 : 455,767.20 = 126,447.48 : x
  2. Step 2: Convert to fraction form
    303,820.56/455,767.20 = 126,447.48/x
  3. Step 3: Cross multiply
    303,820.56x = 455,767.20 × 126,447.48
  4. Step 4: Simplify right side
    303,820.56x = 57,630,613,906.66
  5. Step 5: Solve for x
    x = 57,630,613,906.66/303,820.56
  6. Step 6: Final answer
    x = 189,686.35

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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.