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Finding the Fourth Proportional to 389,956.02, 584,954.78 and 123,737.37

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Solution

The fourth proportional to 389,956.02, 584,954.78 and 123,737.37 is: 185,612.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,956.02 : 584,954.78 = 123,737.37 : x
  2. Step 2: Convert to fraction form
    389,956.02/584,954.78 = 123,737.37/x
  3. Step 3: Cross multiply
    389,956.02x = 584,954.78 × 123,737.37
  4. Step 4: Simplify right side
    389,956.02x = 72,380,765,427.44
  5. Step 5: Solve for x
    x = 72,380,765,427.44/389,956.02
  6. Step 6: Final answer
    x = 185,612.64

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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.