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Finding the Fourth Proportional to 479,722.42, 661,999.50 and 261,927.08

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Solution

The fourth proportional to 479,722.42, 661,999.50 and 261,927.08 is: 361,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,722.42 : 661,999.50 = 261,927.08 : x
  2. Step 2: Convert to fraction form
    479,722.42/661,999.50 = 261,927.08/x
  3. Step 3: Cross multiply
    479,722.42x = 661,999.50 × 261,927.08
  4. Step 4: Simplify right side
    479,722.42x = 173,395,595,996.46
  5. Step 5: Solve for x
    x = 173,395,595,996.46/479,722.42
  6. Step 6: Final answer
    x = 361,449.85

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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.