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Finding the Fourth Proportional to 479,287.86, 661,299.09 and 292,972.32

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Solution

The fourth proportional to 479,287.86, 661,299.09 and 292,972.32 is: 404,229.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,287.86 : 661,299.09 = 292,972.32 : x
  2. Step 2: Convert to fraction form
    479,287.86/661,299.09 = 292,972.32/x
  3. Step 3: Cross multiply
    479,287.86x = 661,299.09 × 292,972.32
  4. Step 4: Simplify right side
    479,287.86x = 193,742,328,611.19
  5. Step 5: Solve for x
    x = 193,742,328,611.19/479,287.86
  6. Step 6: Final answer
    x = 404,229.58

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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.