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Finding the Fourth Proportional to 259,651.60, 389,579.80 and 101,853.20

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Solution

The fourth proportional to 259,651.60, 389,579.80 and 101,853.20 is: 152,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,651.60 : 389,579.80 = 101,853.20 : x
  2. Step 2: Convert to fraction form
    259,651.60/389,579.80 = 101,853.20/x
  3. Step 3: Cross multiply
    259,651.60x = 389,579.80 × 101,853.20
  4. Step 4: Simplify right side
    259,651.60x = 39,679,949,285.36
  5. Step 5: Solve for x
    x = 39,679,949,285.36/259,651.60
  6. Step 6: Final answer
    x = 152,819.97

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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.