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Finding the Fourth Proportional to 203,399.51, 280,700.84 and 126,963.86

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Solution

The fourth proportional to 203,399.51, 280,700.84 and 126,963.86 is: 175,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,399.51 : 280,700.84 = 126,963.86 : x
  2. Step 2: Convert to fraction form
    203,399.51/280,700.84 = 126,963.86/x
  3. Step 3: Cross multiply
    203,399.51x = 280,700.84 × 126,963.86
  4. Step 4: Simplify right side
    203,399.51x = 35,638,861,065.55
  5. Step 5: Solve for x
    x = 35,638,861,065.55/203,399.51
  6. Step 6: Final answer
    x = 175,216.07

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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.