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Finding the Fourth Proportional to 664,710.41, 996,856.48 and 215,327.02

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Solution

The fourth proportional to 664,710.41, 996,856.48 and 215,327.02 is: 322,922.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,710.41 : 996,856.48 = 215,327.02 : x
  2. Step 2: Convert to fraction form
    664,710.41/996,856.48 = 215,327.02/x
  3. Step 3: Cross multiply
    664,710.41x = 996,856.48 × 215,327.02
  4. Step 4: Simplify right side
    664,710.41x = 214,650,129,952.65
  5. Step 5: Solve for x
    x = 214,650,129,952.65/664,710.41
  6. Step 6: Final answer
    x = 322,922.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.