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Finding the Fourth Proportional to 352,653.82, 486,667.90 and 199,687.86

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Solution

The fourth proportional to 352,653.82, 486,667.90 and 199,687.86 is: 275,572.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,653.82 : 486,667.90 = 199,687.86 : x
  2. Step 2: Convert to fraction form
    352,653.82/486,667.90 = 199,687.86/x
  3. Step 3: Cross multiply
    352,653.82x = 486,667.90 × 199,687.86
  4. Step 4: Simplify right side
    352,653.82x = 97,181,671,481.69
  5. Step 5: Solve for x
    x = 97,181,671,481.69/352,653.82
  6. Step 6: Final answer
    x = 275,572.43

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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.