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Finding the Fourth Proportional to 355,563.74, 490,673.16 and 202,610.97

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Solution

The fourth proportional to 355,563.74, 490,673.16 and 202,610.97 is: 279,600.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,563.74 : 490,673.16 = 202,610.97 : x
  2. Step 2: Convert to fraction form
    355,563.74/490,673.16 = 202,610.97/x
  3. Step 3: Cross multiply
    355,563.74x = 490,673.16 × 202,610.97
  4. Step 4: Simplify right side
    355,563.74x = 99,415,764,900.57
  5. Step 5: Solve for x
    x = 99,415,764,900.57/355,563.74
  6. Step 6: Final answer
    x = 279,600.40

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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.