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Finding the Fourth Proportional to 388,296.67, 535,844.29 and 213,863.52

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Solution

The fourth proportional to 388,296.67, 535,844.29 and 213,863.52 is: 295,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,296.67 : 535,844.29 = 213,863.52 : x
  2. Step 2: Convert to fraction form
    388,296.67/535,844.29 = 213,863.52/x
  3. Step 3: Cross multiply
    388,296.67x = 535,844.29 × 213,863.52
  4. Step 4: Simplify right side
    388,296.67x = 114,597,546,031.30
  5. Step 5: Solve for x
    x = 114,597,546,031.30/388,296.67
  6. Step 6: Final answer
    x = 295,128.84

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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.