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Finding the Fourth Proportional to 220,683.72, 304,550.46 and 135,849.72

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Solution

The fourth proportional to 220,683.72, 304,550.46 and 135,849.72 is: 187,476.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,683.72 : 304,550.46 = 135,849.72 : x
  2. Step 2: Convert to fraction form
    220,683.72/304,550.46 = 135,849.72/x
  3. Step 3: Cross multiply
    220,683.72x = 304,550.46 × 135,849.72
  4. Step 4: Simplify right side
    220,683.72x = 41,373,094,716.87
  5. Step 5: Solve for x
    x = 41,373,094,716.87/220,683.72
  6. Step 6: Final answer
    x = 187,476.88

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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.