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Finding the Fourth Proportional to 399,843.26, 599,869.91 and 143,701.68

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Solution

The fourth proportional to 399,843.26, 599,869.91 and 143,701.68 is: 215,590.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,843.26 : 599,869.91 = 143,701.68 : x
  2. Step 2: Convert to fraction form
    399,843.26/599,869.91 = 143,701.68/x
  3. Step 3: Cross multiply
    399,843.26x = 599,869.91 × 143,701.68
  4. Step 4: Simplify right side
    399,843.26x = 86,202,313,848.45
  5. Step 5: Solve for x
    x = 86,202,313,848.45/399,843.26
  6. Step 6: Final answer
    x = 215,590.26

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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.