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Finding the Fourth Proportional to 384,203.11, 576,710.48 and 215,867.29

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Solution

The fourth proportional to 384,203.11, 576,710.48 and 215,867.29 is: 324,028.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,203.11 : 576,710.48 = 215,867.29 : x
  2. Step 2: Convert to fraction form
    384,203.11/576,710.48 = 215,867.29/x
  3. Step 3: Cross multiply
    384,203.11x = 576,710.48 × 215,867.29
  4. Step 4: Simplify right side
    384,203.11x = 124,492,928,432.20
  5. Step 5: Solve for x
    x = 124,492,928,432.20/384,203.11
  6. Step 6: Final answer
    x = 324,028.95

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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.