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Finding the Fourth Proportional to 664,574.46, 996,835.76 and 221,342.46

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Solution

The fourth proportional to 664,574.46, 996,835.76 and 221,342.46 is: 332,005.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,574.46 : 996,835.76 = 221,342.46 : x
  2. Step 2: Convert to fraction form
    664,574.46/996,835.76 = 221,342.46/x
  3. Step 3: Cross multiply
    664,574.46x = 996,835.76 × 221,342.46
  4. Step 4: Simplify right side
    664,574.46x = 220,642,079,334.37
  5. Step 5: Solve for x
    x = 220,642,079,334.37/664,574.46
  6. Step 6: Final answer
    x = 332,005.05

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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.