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Finding the Fourth Proportional to 389,956.88, 584,861.52 and 190,076.48

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Solution

The fourth proportional to 389,956.88, 584,861.52 and 190,076.48 is: 285,078.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,956.88 : 584,861.52 = 190,076.48 : x
  2. Step 2: Convert to fraction form
    389,956.88/584,861.52 = 190,076.48/x
  3. Step 3: Cross multiply
    389,956.88x = 584,861.52 × 190,076.48
  4. Step 4: Simplify right side
    389,956.88x = 111,168,419,009.05
  5. Step 5: Solve for x
    x = 111,168,419,009.05/389,956.88
  6. Step 6: Final answer
    x = 285,078.75

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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.