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Finding the Fourth Proportional to 202,939.40, 280,023.66 and 127,434.44

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Solution

The fourth proportional to 202,939.40, 280,023.66 and 127,434.44 is: 175,838.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,939.40 : 280,023.66 = 127,434.44 : x
  2. Step 2: Convert to fraction form
    202,939.40/280,023.66 = 127,434.44/x
  3. Step 3: Cross multiply
    202,939.40x = 280,023.66 × 127,434.44
  4. Step 4: Simplify right side
    202,939.40x = 35,684,658,298.85
  5. Step 5: Solve for x
    x = 35,684,658,298.85/202,939.40
  6. Step 6: Final answer
    x = 175,838.99

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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.