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Finding the Fourth Proportional to 388,104.04, 535,593.99 and 213,679.56

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Solution

The fourth proportional to 388,104.04, 535,593.99 and 213,679.56 is: 294,883.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,104.04 : 535,593.99 = 213,679.56 : x
  2. Step 2: Convert to fraction form
    388,104.04/535,593.99 = 213,679.56/x
  3. Step 3: Cross multiply
    388,104.04x = 535,593.99 × 213,679.56
  4. Step 4: Simplify right side
    388,104.04x = 114,445,488,121.84
  5. Step 5: Solve for x
    x = 114,445,488,121.84/388,104.04
  6. Step 6: Final answer
    x = 294,883.53

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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.