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Finding the Fourth Proportional to 448,956.72, 672,961.68 and 149,357.28

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Solution

The fourth proportional to 448,956.72, 672,961.68 and 149,357.28 is: 223,878.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,956.72 : 672,961.68 = 149,357.28 : x
  2. Step 2: Convert to fraction form
    448,956.72/672,961.68 = 149,357.28/x
  3. Step 3: Cross multiply
    448,956.72x = 672,961.68 × 149,357.28
  4. Step 4: Simplify right side
    448,956.72x = 100,511,726,069.03
  5. Step 5: Solve for x
    x = 100,511,726,069.03/448,956.72
  6. Step 6: Final answer
    x = 223,878.43

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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.