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Finding the Fourth Proportional to 309,609.96, 427,279.01 and 232,991.25

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Solution

The fourth proportional to 309,609.96, 427,279.01 and 232,991.25 is: 321,540.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,609.96 : 427,279.01 = 232,991.25 : x
  2. Step 2: Convert to fraction form
    309,609.96/427,279.01 = 232,991.25/x
  3. Step 3: Cross multiply
    309,609.96x = 427,279.01 × 232,991.25
  4. Step 4: Simplify right side
    309,609.96x = 99,552,269,473.71
  5. Step 5: Solve for x
    x = 99,552,269,473.71/309,609.96
  6. Step 6: Final answer
    x = 321,540.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.