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Finding the Fourth Proportional to 342,227.74, 512,979.60 and 128,903.34

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Solution

The fourth proportional to 342,227.74, 512,979.60 and 128,903.34 is: 193,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,227.74 : 512,979.60 = 128,903.34 : x
  2. Step 2: Convert to fraction form
    342,227.74/512,979.60 = 128,903.34/x
  3. Step 3: Cross multiply
    342,227.74x = 512,979.60 × 128,903.34
  4. Step 4: Simplify right side
    342,227.74x = 66,124,783,791.86
  5. Step 5: Solve for x
    x = 66,124,783,791.86/342,227.74
  6. Step 6: Final answer
    x = 193,218.66

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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.