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Finding the Fourth Proportional to 395,043.63, 545,156.12 and 213,751.56

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Solution

The fourth proportional to 395,043.63, 545,156.12 and 213,751.56 is: 294,974.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,043.63 : 545,156.12 = 213,751.56 : x
  2. Step 2: Convert to fraction form
    395,043.63/545,156.12 = 213,751.56/x
  3. Step 3: Cross multiply
    395,043.63x = 545,156.12 × 213,751.56
  4. Step 4: Simplify right side
    395,043.63x = 116,527,970,024.79
  5. Step 5: Solve for x
    x = 116,527,970,024.79/395,043.63
  6. Step 6: Final answer
    x = 294,974.94

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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.