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Finding the Fourth Proportional to 664,561.46, 996,816.27 and 221,329.46

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Solution

The fourth proportional to 664,561.46, 996,816.27 and 221,329.46 is: 331,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,561.46 : 996,816.27 = 221,329.46 : x
  2. Step 2: Convert to fraction form
    664,561.46/996,816.27 = 221,329.46/x
  3. Step 3: Cross multiply
    664,561.46x = 996,816.27 × 221,329.46
  4. Step 4: Simplify right side
    664,561.46x = 220,624,806,758.31
  5. Step 5: Solve for x
    x = 220,624,806,758.31/664,561.46
  6. Step 6: Final answer
    x = 331,985.56

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Half scale
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Double scale
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Similar ratio
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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.