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Finding the Fourth Proportional to 345,078.99, 517,670.73 and 108,399.42

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Solution

The fourth proportional to 345,078.99, 517,670.73 and 108,399.42 is: 162,615.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,078.99 : 517,670.73 = 108,399.42 : x
  2. Step 2: Convert to fraction form
    345,078.99/517,670.73 = 108,399.42/x
  3. Step 3: Cross multiply
    345,078.99x = 517,670.73 × 108,399.42
  4. Step 4: Simplify right side
    345,078.99x = 56,115,206,882.98
  5. Step 5: Solve for x
    x = 56,115,206,882.98/345,078.99
  6. Step 6: Final answer
    x = 162,615.54

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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.