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Finding the Fourth Proportional to 399,399.13, 599,103.98 and 133,159.73

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Solution

The fourth proportional to 399,399.13, 599,103.98 and 133,159.73 is: 199,741.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,399.13 : 599,103.98 = 133,159.73 : x
  2. Step 2: Convert to fraction form
    399,399.13/599,103.98 = 133,159.73/x
  3. Step 3: Cross multiply
    399,399.13x = 599,103.98 × 133,159.73
  4. Step 4: Simplify right side
    399,399.13x = 79,776,521,556.10
  5. Step 5: Solve for x
    x = 79,776,521,556.10/399,399.13
  6. Step 6: Final answer
    x = 199,741.35

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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.