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Finding the Fourth Proportional to 217,428.05, 300,064.90 and 125,551.21

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Solution

The fourth proportional to 217,428.05, 300,064.90 and 125,551.21 is: 173,268.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,428.05 : 300,064.90 = 125,551.21 : x
  2. Step 2: Convert to fraction form
    217,428.05/300,064.90 = 125,551.21/x
  3. Step 3: Cross multiply
    217,428.05x = 300,064.90 × 125,551.21
  4. Step 4: Simplify right side
    217,428.05x = 37,673,511,273.53
  5. Step 5: Solve for x
    x = 37,673,511,273.53/217,428.05
  6. Step 6: Final answer
    x = 173,268.86

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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.