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Finding the Fourth Proportional to 395,620.56, 545,955.57 and 214,336.95

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Solution

The fourth proportional to 395,620.56, 545,955.57 and 214,336.95 is: 295,784.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,620.56 : 545,955.57 = 214,336.95 : x
  2. Step 2: Convert to fraction form
    395,620.56/545,955.57 = 214,336.95/x
  3. Step 3: Cross multiply
    395,620.56x = 545,955.57 × 214,336.95
  4. Step 4: Simplify right side
    395,620.56x = 117,018,451,709.31
  5. Step 5: Solve for x
    x = 117,018,451,709.31/395,620.56
  6. Step 6: Final answer
    x = 295,784.56

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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.