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Finding the Fourth Proportional to 335,732.75, 503,111.15 and 215,412.21

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Solution

The fourth proportional to 335,732.75, 503,111.15 and 215,412.21 is: 322,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,732.75 : 503,111.15 = 215,412.21 : x
  2. Step 2: Convert to fraction form
    335,732.75/503,111.15 = 215,412.21/x
  3. Step 3: Cross multiply
    335,732.75x = 503,111.15 × 215,412.21
  4. Step 4: Simplify right side
    335,732.75x = 108,376,284,427.88
  5. Step 5: Solve for x
    x = 108,376,284,427.88/335,732.75
  6. Step 6: Final answer
    x = 322,805.22

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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.