Home / 386,969.43-533,988.54-217,170.75

Finding the Fourth Proportional to 386,969.43, 533,988.54 and 217,170.75

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Solution

The fourth proportional to 386,969.43, 533,988.54 and 217,170.75 is: 299,679.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,969.43 : 533,988.54 = 217,170.75 : x
  2. Step 2: Convert to fraction form
    386,969.43/533,988.54 = 217,170.75/x
  3. Step 3: Cross multiply
    386,969.43x = 533,988.54 × 217,170.75
  4. Step 4: Simplify right side
    386,969.43x = 115,966,691,723.21
  5. Step 5: Solve for x
    x = 115,966,691,723.21/386,969.43
  6. Step 6: Final answer
    x = 299,679.21

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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.