Home / 386,910.64-533,960.37-217,144.75

Finding the Fourth Proportional to 386,910.64, 533,960.37 and 217,144.75

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Solution

The fourth proportional to 386,910.64, 533,960.37 and 217,144.75 is: 299,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,910.64 : 533,960.37 = 217,144.75 : x
  2. Step 2: Convert to fraction form
    386,910.64/533,960.37 = 217,144.75/x
  3. Step 3: Cross multiply
    386,910.64x = 533,960.37 × 217,144.75
  4. Step 4: Simplify right side
    386,910.64x = 115,946,691,053.56
  5. Step 5: Solve for x
    x = 115,946,691,053.56/386,910.64
  6. Step 6: Final answer
    x = 299,673.05

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1.5x scale

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.