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Finding the Fourth Proportional to 419,991.57, 579,575.88 and 238,723.29

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Solution

The fourth proportional to 419,991.57, 579,575.88 and 238,723.29 is: 329,431.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,991.57 : 579,575.88 = 238,723.29 : x
  2. Step 2: Convert to fraction form
    419,991.57/579,575.88 = 238,723.29/x
  3. Step 3: Cross multiply
    419,991.57x = 579,575.88 × 238,723.29
  4. Step 4: Simplify right side
    419,991.57x = 138,358,260,878.25
  5. Step 5: Solve for x
    x = 138,358,260,878.25/419,991.57
  6. Step 6: Final answer
    x = 329,431.04

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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.