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Finding the Fourth Proportional to 445,095.40, 667,578.30 and 129,519.40

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Solution

The fourth proportional to 445,095.40, 667,578.30 and 129,519.40 is: 194,260.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,095.40 : 667,578.30 = 129,519.40 : x
  2. Step 2: Convert to fraction form
    445,095.40/667,578.30 = 129,519.40/x
  3. Step 3: Cross multiply
    445,095.40x = 667,578.30 × 129,519.40
  4. Step 4: Simplify right side
    445,095.40x = 86,464,340,869.02
  5. Step 5: Solve for x
    x = 86,464,340,869.02/445,095.40
  6. Step 6: Final answer
    x = 194,260.24

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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.