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Finding the Fourth Proportional to 223,412.70, 335,357.79 and 90,379.92

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Solution

The fourth proportional to 223,412.70, 335,357.79 and 90,379.92 is: 135,666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,412.70 : 335,357.79 = 90,379.92 : x
  2. Step 2: Convert to fraction form
    223,412.70/335,357.79 = 90,379.92/x
  3. Step 3: Cross multiply
    223,412.70x = 335,357.79 × 90,379.92
  4. Step 4: Simplify right side
    223,412.70x = 30,309,610,231.58
  5. Step 5: Solve for x
    x = 30,309,610,231.58/223,412.70
  6. Step 6: Final answer
    x = 135,666.46

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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.