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Finding the Fourth Proportional to 386,573.88, 579,900.48 and 133,854

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Solution

The fourth proportional to 386,573.88, 579,900.48 and 133,854 is: 200,794.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,573.88 : 579,900.48 = 133,854 : x
  2. Step 2: Convert to fraction form
    386,573.88/579,900.48 = 133,854/x
  3. Step 3: Cross multiply
    386,573.88x = 579,900.48 × 133,854
  4. Step 4: Simplify right side
    386,573.88x = 77,621,998,849.92
  5. Step 5: Solve for x
    x = 77,621,998,849.92/386,573.88
  6. Step 6: Final answer
    x = 200,794.73

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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.