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Finding the Fourth Proportional to 664,135, 996,202.50 and 220,903

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Solution

The fourth proportional to 664,135, 996,202.50 and 220,903 is: 331,354.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,135 : 996,202.50 = 220,903 : x
  2. Step 2: Convert to fraction form
    664,135/996,202.50 = 220,903/x
  3. Step 3: Cross multiply
    664,135x = 996,202.50 × 220,903
  4. Step 4: Simplify right side
    664,135x = 220,064,120,857.50
  5. Step 5: Solve for x
    x = 220,064,120,857.50/664,135
  6. Step 6: Final answer
    x = 331,354.50

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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.