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Finding the Fourth Proportional to 389,388.84, 584,116.04 and 123,143.44

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Solution

The fourth proportional to 389,388.84, 584,116.04 and 123,143.44 is: 184,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,388.84 : 584,116.04 = 123,143.44 : x
  2. Step 2: Convert to fraction form
    389,388.84/584,116.04 = 123,143.44/x
  3. Step 3: Cross multiply
    389,388.84x = 584,116.04 × 123,143.44
  4. Step 4: Simplify right side
    389,388.84x = 71,930,058,524.78
  5. Step 5: Solve for x
    x = 71,930,058,524.78/389,388.84
  6. Step 6: Final answer
    x = 184,725.53

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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.