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Finding the Fourth Proportional to 395,626.74, 545,965.04 and 214,339.92

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Solution

The fourth proportional to 395,626.74, 545,965.04 and 214,339.92 is: 295,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,626.74 : 545,965.04 = 214,339.92 : x
  2. Step 2: Convert to fraction form
    395,626.74/545,965.04 = 214,339.92/x
  3. Step 3: Cross multiply
    395,626.74x = 545,965.04 × 214,339.92
  4. Step 4: Simplify right side
    395,626.74x = 117,022,102,996.40
  5. Step 5: Solve for x
    x = 117,022,102,996.40/395,626.74
  6. Step 6: Final answer
    x = 295,789.16

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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.