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Finding the Fourth Proportional to 448,479.56, 672,338.32 and 208,732.69

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Solution

The fourth proportional to 448,479.56, 672,338.32 and 208,732.69 is: 312,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,479.56 : 672,338.32 = 208,732.69 : x
  2. Step 2: Convert to fraction form
    448,479.56/672,338.32 = 208,732.69/x
  3. Step 3: Cross multiply
    448,479.56x = 672,338.32 × 208,732.69
  4. Step 4: Simplify right side
    448,479.56x = 140,338,986,123.68
  5. Step 5: Solve for x
    x = 140,338,986,123.68/448,479.56
  6. Step 6: Final answer
    x = 312,921.70

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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.