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Finding the Fourth Proportional to 355,388.52, 490,422.84 and 194,242.28

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Solution

The fourth proportional to 355,388.52, 490,422.84 and 194,242.28 is: 268,047.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,388.52 : 490,422.84 = 194,242.28 : x
  2. Step 2: Convert to fraction form
    355,388.52/490,422.84 = 194,242.28/x
  3. Step 3: Cross multiply
    355,388.52x = 490,422.84 × 194,242.28
  4. Step 4: Simplify right side
    355,388.52x = 95,260,850,605.68
  5. Step 5: Solve for x
    x = 95,260,850,605.68/355,388.52
  6. Step 6: Final answer
    x = 268,047.07

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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.