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Finding the Fourth Proportional to 664,710.72, 996,856.95 and 215,327.33

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Solution

The fourth proportional to 664,710.72, 996,856.95 and 215,327.33 is: 322,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,710.72 : 996,856.95 = 215,327.33 : x
  2. Step 2: Convert to fraction form
    664,710.72/996,856.95 = 215,327.33/x
  3. Step 3: Cross multiply
    664,710.72x = 996,856.95 × 215,327.33
  4. Step 4: Simplify right side
    664,710.72x = 214,650,542,943.30
  5. Step 5: Solve for x
    x = 214,650,542,943.30/664,710.72
  6. Step 6: Final answer
    x = 322,923.24

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1.5x scale

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.