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Finding the Fourth Proportional to 331,425.68, 457,221.84 and 223,956.56

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Solution

The fourth proportional to 331,425.68, 457,221.84 and 223,956.56 is: 308,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,425.68 : 457,221.84 = 223,956.56 : x
  2. Step 2: Convert to fraction form
    331,425.68/457,221.84 = 223,956.56/x
  3. Step 3: Cross multiply
    331,425.68x = 457,221.84 × 223,956.56
  4. Step 4: Simplify right side
    331,425.68x = 102,397,830,443.27
  5. Step 5: Solve for x
    x = 102,397,830,443.27/331,425.68
  6. Step 6: Final answer
    x = 308,961.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.