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Finding the Fourth Proportional to 448,405.79, 672,611.11 and 132,865.43

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Solution

The fourth proportional to 448,405.79, 672,611.11 and 132,865.43 is: 199,298.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,405.79 : 672,611.11 = 132,865.43 : x
  2. Step 2: Convert to fraction form
    448,405.79/672,611.11 = 132,865.43/x
  3. Step 3: Cross multiply
    448,405.79x = 672,611.11 × 132,865.43
  4. Step 4: Simplify right side
    448,405.79x = 89,366,760,657.71
  5. Step 5: Solve for x
    x = 89,366,760,657.71/448,405.79
  6. Step 6: Final answer
    x = 199,298.86

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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.