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Finding the Fourth Proportional to 355,090.43, 490,024.79 and 193,945.86

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Solution

The fourth proportional to 355,090.43, 490,024.79 and 193,945.86 is: 267,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,090.43 : 490,024.79 = 193,945.86 : x
  2. Step 2: Convert to fraction form
    355,090.43/490,024.79 = 193,945.86/x
  3. Step 3: Cross multiply
    355,090.43x = 490,024.79 × 193,945.86
  4. Step 4: Simplify right side
    355,090.43x = 95,038,279,317.87
  5. Step 5: Solve for x
    x = 95,038,279,317.87/355,090.43
  6. Step 6: Final answer
    x = 267,645.28

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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.