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Finding the Fourth Proportional to 258,826.80, 388,081.80 and 100,873.20

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Solution

The fourth proportional to 258,826.80, 388,081.80 and 100,873.20 is: 151,248.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,826.80 : 388,081.80 = 100,873.20 : x
  2. Step 2: Convert to fraction form
    258,826.80/388,081.80 = 100,873.20/x
  3. Step 3: Cross multiply
    258,826.80x = 388,081.80 × 100,873.20
  4. Step 4: Simplify right side
    258,826.80x = 39,147,053,027.76
  5. Step 5: Solve for x
    x = 39,147,053,027.76/258,826.80
  6. Step 6: Final answer
    x = 151,248.07

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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.