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Finding the Fourth Proportional to 388,249.20, 535,782.80 and 218,483.33

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Solution

The fourth proportional to 388,249.20, 535,782.80 and 218,483.33 is: 301,506.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,249.20 : 535,782.80 = 218,483.33 : x
  2. Step 2: Convert to fraction form
    388,249.20/535,782.80 = 218,483.33/x
  3. Step 3: Cross multiply
    388,249.20x = 535,782.80 × 218,483.33
  4. Step 4: Simplify right side
    388,249.20x = 117,059,608,168.02
  5. Step 5: Solve for x
    x = 117,059,608,168.02/388,249.20
  6. Step 6: Final answer
    x = 301,506.37

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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.