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Finding the Fourth Proportional to 385,711.19, 578,604.84 and 132,958.41

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Solution

The fourth proportional to 385,711.19, 578,604.84 and 132,958.41 is: 199,450.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,711.19 : 578,604.84 = 132,958.41 : x
  2. Step 2: Convert to fraction form
    385,711.19/578,604.84 = 132,958.41/x
  3. Step 3: Cross multiply
    385,711.19x = 578,604.84 × 132,958.41
  4. Step 4: Simplify right side
    385,711.19x = 76,930,378,370.36
  5. Step 5: Solve for x
    x = 76,930,378,370.36/385,711.19
  6. Step 6: Final answer
    x = 199,450.73

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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.