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Finding the Fourth Proportional to 423,555.86, 635,450.43 and 143,269.94

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Solution

The fourth proportional to 423,555.86, 635,450.43 and 143,269.94 is: 214,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,555.86 : 635,450.43 = 143,269.94 : x
  2. Step 2: Convert to fraction form
    423,555.86/635,450.43 = 143,269.94/x
  3. Step 3: Cross multiply
    423,555.86x = 635,450.43 × 143,269.94
  4. Step 4: Simplify right side
    423,555.86x = 91,040,944,979.07
  5. Step 5: Solve for x
    x = 91,040,944,979.07/423,555.86
  6. Step 6: Final answer
    x = 214,944.36

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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.