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Finding the Fourth Proportional to 355,390.39, 490,451.93 and 194,256.28

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Solution

The fourth proportional to 355,390.39, 490,451.93 and 194,256.28 is: 268,080.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,390.39 : 490,451.93 = 194,256.28 : x
  2. Step 2: Convert to fraction form
    355,390.39/490,451.93 = 194,256.28/x
  3. Step 3: Cross multiply
    355,390.39x = 490,451.93 × 194,256.28
  4. Step 4: Simplify right side
    355,390.39x = 95,273,367,440.62
  5. Step 5: Solve for x
    x = 95,273,367,440.62/355,390.39
  6. Step 6: Final answer
    x = 268,080.88

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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.