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Finding the Fourth Proportional to 221,616.04, 305,829.66 and 121,014.04

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Solution

The fourth proportional to 221,616.04, 305,829.66 and 121,014.04 is: 166,999.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,616.04 : 305,829.66 = 121,014.04 : x
  2. Step 2: Convert to fraction form
    221,616.04/305,829.66 = 121,014.04/x
  3. Step 3: Cross multiply
    221,616.04x = 305,829.66 × 121,014.04
  4. Step 4: Simplify right side
    221,616.04x = 37,009,682,708.43
  5. Step 5: Solve for x
    x = 37,009,682,708.43/221,616.04
  6. Step 6: Final answer
    x = 166,999.12

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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.