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Finding the Fourth Proportional to 221,219.96, 305,273.83 and 124,431.89

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Solution

The fourth proportional to 221,219.96, 305,273.83 and 124,431.89 is: 171,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,219.96 : 305,273.83 = 124,431.89 : x
  2. Step 2: Convert to fraction form
    221,219.96/305,273.83 = 124,431.89/x
  3. Step 3: Cross multiply
    221,219.96x = 305,273.83 × 124,431.89
  4. Step 4: Simplify right side
    221,219.96x = 37,985,799,323.36
  5. Step 5: Solve for x
    x = 37,985,799,323.36/221,219.96
  6. Step 6: Final answer
    x = 171,710.54

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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.