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Finding the Fourth Proportional to 479,446.94, 661,652.65 and 261,667.50

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Solution

The fourth proportional to 479,446.94, 661,652.65 and 261,667.50 is: 361,109.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,446.94 : 661,652.65 = 261,667.50 : x
  2. Step 2: Convert to fraction form
    479,446.94/661,652.65 = 261,667.50/x
  3. Step 3: Cross multiply
    479,446.94x = 661,652.65 × 261,667.50
  4. Step 4: Simplify right side
    479,446.94x = 173,132,994,889.68
  5. Step 5: Solve for x
    x = 173,132,994,889.68/479,446.94
  6. Step 6: Final answer
    x = 361,109.82

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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.