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Finding the Fourth Proportional to 330,489.86, 456,078.87 and 179,586.86

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Solution

The fourth proportional to 330,489.86, 456,078.87 and 179,586.86 is: 247,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,489.86 : 456,078.87 = 179,586.86 : x
  2. Step 2: Convert to fraction form
    330,489.86/456,078.87 = 179,586.86/x
  3. Step 3: Cross multiply
    330,489.86x = 456,078.87 × 179,586.86
  4. Step 4: Simplify right side
    330,489.86x = 81,905,769,895.25
  5. Step 5: Solve for x
    x = 81,905,769,895.25/330,489.86
  6. Step 6: Final answer
    x = 247,831.42

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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.