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Finding the Fourth Proportional to 448,679.40, 672,873.51 and 149,079.54

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Solution

The fourth proportional to 448,679.40, 672,873.51 and 149,079.54 is: 223,570.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,679.40 : 672,873.51 = 149,079.54 : x
  2. Step 2: Convert to fraction form
    448,679.40/672,873.51 = 149,079.54/x
  3. Step 3: Cross multiply
    448,679.40x = 672,873.51 × 149,079.54
  4. Step 4: Simplify right side
    448,679.40x = 100,311,673,348.99
  5. Step 5: Solve for x
    x = 100,311,673,348.99/448,679.40
  6. Step 6: Final answer
    x = 223,570.94

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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.