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Finding the Fourth Proportional to 221,627.81, 332,441.75 and 55,415.81

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Solution

The fourth proportional to 221,627.81, 332,441.75 and 55,415.81 is: 83,123.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,627.81 : 332,441.75 = 55,415.81 : x
  2. Step 2: Convert to fraction form
    221,627.81/332,441.75 = 55,415.81/x
  3. Step 3: Cross multiply
    221,627.81x = 332,441.75 × 55,415.81
  4. Step 4: Simplify right side
    221,627.81x = 18,422,529,823.71
  5. Step 5: Solve for x
    x = 18,422,529,823.71/221,627.81
  6. Step 6: Final answer
    x = 83,123.73

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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.