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Finding the Fourth Proportional to 395,221.44, 545,406.96 and 213,935.52

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Solution

The fourth proportional to 395,221.44, 545,406.96 and 213,935.52 is: 295,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,221.44 : 545,406.96 = 213,935.52 : x
  2. Step 2: Convert to fraction form
    395,221.44/545,406.96 = 213,935.52/x
  3. Step 3: Cross multiply
    395,221.44x = 545,406.96 × 213,935.52
  4. Step 4: Simplify right side
    395,221.44x = 116,681,921,599.22
  5. Step 5: Solve for x
    x = 116,681,921,599.22/395,221.44
  6. Step 6: Final answer
    x = 295,231.76

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1.5x scale

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.