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Finding the Fourth Proportional to 412,372.66, 618,536.48 and 112,831.62

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Solution

The fourth proportional to 412,372.66, 618,536.48 and 112,831.62 is: 169,241.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,372.66 : 618,536.48 = 112,831.62 : x
  2. Step 2: Convert to fraction form
    412,372.66/618,536.48 = 112,831.62/x
  3. Step 3: Cross multiply
    412,372.66x = 618,536.48 × 112,831.62
  4. Step 4: Simplify right side
    412,372.66x = 69,790,473,349.58
  5. Step 5: Solve for x
    x = 69,790,473,349.58/412,372.66
  6. Step 6: Final answer
    x = 169,241.27

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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.