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Finding the Fourth Proportional to 221,460.54, 305,615.46 and 120,858.54

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Solution

The fourth proportional to 221,460.54, 305,615.46 and 120,858.54 is: 166,784.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,460.54 : 305,615.46 = 120,858.54 : x
  2. Step 2: Convert to fraction form
    221,460.54/305,615.46 = 120,858.54/x
  3. Step 3: Cross multiply
    221,460.54x = 305,615.46 × 120,858.54
  4. Step 4: Simplify right side
    221,460.54x = 36,936,238,297.03
  5. Step 5: Solve for x
    x = 36,936,238,297.03/221,460.54
  6. Step 6: Final answer
    x = 166,784.74

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1.5x scale

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.