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Finding the Fourth Proportional to 386,692.88, 533,629.62 and 216,923.36

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Solution

The fourth proportional to 386,692.88, 533,629.62 and 216,923.36 is: 299,350.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,692.88 : 533,629.62 = 216,923.36 : x
  2. Step 2: Convert to fraction form
    386,692.88/533,629.62 = 216,923.36/x
  3. Step 3: Cross multiply
    386,692.88x = 533,629.62 × 216,923.36
  4. Step 4: Simplify right side
    386,692.88x = 115,756,727,497.78
  5. Step 5: Solve for x
    x = 115,756,727,497.78/386,692.88
  6. Step 6: Final answer
    x = 299,350.56

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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.