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Finding the Fourth Proportional to 395,611.36, 545,884.08 and 225,822.40

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Solution

The fourth proportional to 395,611.36, 545,884.08 and 225,822.40 is: 311,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,611.36 : 545,884.08 = 225,822.40 : x
  2. Step 2: Convert to fraction form
    395,611.36/545,884.08 = 225,822.40/x
  3. Step 3: Cross multiply
    395,611.36x = 545,884.08 × 225,822.40
  4. Step 4: Simplify right side
    395,611.36x = 123,272,853,067.39
  5. Step 5: Solve for x
    x = 123,272,853,067.39/395,611.36
  6. Step 6: Final answer
    x = 311,600.89

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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.