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Finding the Fourth Proportional to 664,473.70, 996,856.35 and 215,118.10

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Solution

The fourth proportional to 664,473.70, 996,856.35 and 215,118.10 is: 322,724.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,473.70 : 996,856.35 = 215,118.10 : x
  2. Step 2: Convert to fraction form
    664,473.70/996,856.35 = 215,118.10/x
  3. Step 3: Cross multiply
    664,473.70x = 996,856.35 × 215,118.10
  4. Step 4: Simplify right side
    664,473.70x = 214,441,843,984.94
  5. Step 5: Solve for x
    x = 214,441,843,984.94/664,473.70
  6. Step 6: Final answer
    x = 322,724.35

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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.