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Finding the Fourth Proportional to 220,998.60, 331,497.90 and 127,686.60

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Solution

The fourth proportional to 220,998.60, 331,497.90 and 127,686.60 is: 191,529.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,998.60 : 331,497.90 = 127,686.60 : x
  2. Step 2: Convert to fraction form
    220,998.60/331,497.90 = 127,686.60/x
  3. Step 3: Cross multiply
    220,998.60x = 331,497.90 × 127,686.60
  4. Step 4: Simplify right side
    220,998.60x = 42,327,839,758.14
  5. Step 5: Solve for x
    x = 42,327,839,758.14/220,998.60
  6. Step 6: Final answer
    x = 191,529.90

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1.5x scale

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.