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Finding the Fourth Proportional to 384,203.99, 576,711.79 and 215,868.17

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Solution

The fourth proportional to 384,203.99, 576,711.79 and 215,868.17 is: 324,030.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,203.99 : 576,711.79 = 215,868.17 : x
  2. Step 2: Convert to fraction form
    384,203.99/576,711.79 = 215,868.17/x
  3. Step 3: Cross multiply
    384,203.99x = 576,711.79 × 215,868.17
  4. Step 4: Simplify right side
    384,203.99x = 124,493,718,724.72
  5. Step 5: Solve for x
    x = 124,493,718,724.72/384,203.99
  6. Step 6: Final answer
    x = 324,030.26

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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.