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Finding the Fourth Proportional to 395,085.96, 545,220.08 and 213,797.88

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Solution

The fourth proportional to 395,085.96, 545,220.08 and 213,797.88 is: 295,041.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,085.96 : 545,220.08 = 213,797.88 : x
  2. Step 2: Convert to fraction form
    395,085.96/545,220.08 = 213,797.88/x
  3. Step 3: Cross multiply
    395,085.96x = 545,220.08 × 213,797.88
  4. Step 4: Simplify right side
    395,085.96x = 116,566,897,237.43
  5. Step 5: Solve for x
    x = 116,566,897,237.43/395,085.96
  6. Step 6: Final answer
    x = 295,041.86

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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.