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Finding the Fourth Proportional to 395,619.76, 545,954.60 and 214,336.29

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Solution

The fourth proportional to 395,619.76, 545,954.60 and 214,336.29 is: 295,783.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,619.76 : 545,954.60 = 214,336.29 : x
  2. Step 2: Convert to fraction form
    395,619.76/545,954.60 = 214,336.29/x
  3. Step 3: Cross multiply
    395,619.76x = 545,954.60 × 214,336.29
  4. Step 4: Simplify right side
    395,619.76x = 117,017,882,400.75
  5. Step 5: Solve for x
    x = 117,017,882,400.75/395,619.76
  6. Step 6: Final answer
    x = 295,783.72

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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.