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Finding the Fourth Proportional to 355,748.81, 490,945.51 and 202,809.62

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Solution

The fourth proportional to 355,748.81, 490,945.51 and 202,809.62 is: 279,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,748.81 : 490,945.51 = 202,809.62 : x
  2. Step 2: Convert to fraction form
    355,748.81/490,945.51 = 202,809.62/x
  3. Step 3: Cross multiply
    355,748.81x = 490,945.51 × 202,809.62
  4. Step 4: Simplify right side
    355,748.81x = 99,568,472,663.88
  5. Step 5: Solve for x
    x = 99,568,472,663.88/355,748.81
  6. Step 6: Final answer
    x = 279,884.20

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1.5x scale

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.