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Finding the Fourth Proportional to 221,248.58, 305,322.46 and 120,646.58

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Solution

The fourth proportional to 221,248.58, 305,322.46 and 120,646.58 is: 166,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,248.58 : 305,322.46 = 120,646.58 : x
  2. Step 2: Convert to fraction form
    221,248.58/305,322.46 = 120,646.58/x
  3. Step 3: Cross multiply
    221,248.58x = 305,322.46 × 120,646.58
  4. Step 4: Simplify right side
    221,248.58x = 36,836,110,596.19
  5. Step 5: Solve for x
    x = 36,836,110,596.19/221,248.58
  6. Step 6: Final answer
    x = 166,491.96

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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.