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Finding the Fourth Proportional to 395,224.79, 545,410.46 and 213,938.21

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Solution

The fourth proportional to 395,224.79, 545,410.46 and 213,938.21 is: 295,234.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,224.79 : 545,410.46 = 213,938.21 : x
  2. Step 2: Convert to fraction form
    395,224.79/545,410.46 = 213,938.21/x
  3. Step 3: Cross multiply
    395,224.79x = 545,410.46 × 213,938.21
  4. Step 4: Simplify right side
    395,224.79x = 116,684,135,974.63
  5. Step 5: Solve for x
    x = 116,684,135,974.63/395,224.79
  6. Step 6: Final answer
    x = 295,234.86

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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.