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Finding the Fourth Proportional to 395,251.32, 545,444.82 and 213,963.60

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Solution

The fourth proportional to 395,251.32, 545,444.82 and 213,963.60 is: 295,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,251.32 : 545,444.82 = 213,963.60 : x
  2. Step 2: Convert to fraction form
    395,251.32/545,444.82 = 213,963.60/x
  3. Step 3: Cross multiply
    395,251.32x = 545,444.82 × 213,963.60
  4. Step 4: Simplify right side
    395,251.32x = 116,705,337,288.55
  5. Step 5: Solve for x
    x = 116,705,337,288.55/395,251.32
  6. Step 6: Final answer
    x = 295,268.68

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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.