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Finding the Fourth Proportional to 235,976.68, 325,644.06 and 128,548

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Solution

The fourth proportional to 235,976.68, 325,644.06 and 128,548 is: 177,394.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,976.68 : 325,644.06 = 128,548 : x
  2. Step 2: Convert to fraction form
    235,976.68/325,644.06 = 128,548/x
  3. Step 3: Cross multiply
    235,976.68x = 325,644.06 × 128,548
  4. Step 4: Simplify right side
    235,976.68x = 41,860,892,624.88
  5. Step 5: Solve for x
    x = 41,860,892,624.88/235,976.68
  6. Step 6: Final answer
    x = 177,394.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.