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Finding the Fourth Proportional to 419,993.82, 579,579.03 and 238,725.54

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Solution

The fourth proportional to 419,993.82, 579,579.03 and 238,725.54 is: 329,434.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,993.82 : 579,579.03 = 238,725.54 : x
  2. Step 2: Convert to fraction form
    419,993.82/579,579.03 = 238,725.54/x
  3. Step 3: Cross multiply
    419,993.82x = 579,579.03 × 238,725.54
  4. Step 4: Simplify right side
    419,993.82x = 138,360,316,909.43
  5. Step 5: Solve for x
    x = 138,360,316,909.43/419,993.82
  6. Step 6: Final answer
    x = 329,434.17

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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.