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Finding the Fourth Proportional to 399,780.32, 599,252.52 and 189,167.36

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Solution

The fourth proportional to 399,780.32, 599,252.52 and 189,167.36 is: 283,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,780.32 : 599,252.52 = 189,167.36 : x
  2. Step 2: Convert to fraction form
    399,780.32/599,252.52 = 189,167.36/x
  3. Step 3: Cross multiply
    399,780.32x = 599,252.52 × 189,167.36
  4. Step 4: Simplify right side
    399,780.32x = 113,359,017,181.75
  5. Step 5: Solve for x
    x = 113,359,017,181.75/399,780.32
  6. Step 6: Final answer
    x = 283,553.27

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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.