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Finding the Fourth Proportional to 405,062.75, 607,179.40 and 168,542.75

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Solution

The fourth proportional to 405,062.75, 607,179.40 and 168,542.75 is: 252,641.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,062.75 : 607,179.40 = 168,542.75 : x
  2. Step 2: Convert to fraction form
    405,062.75/607,179.40 = 168,542.75/x
  3. Step 3: Cross multiply
    405,062.75x = 607,179.40 × 168,542.75
  4. Step 4: Simplify right side
    405,062.75x = 102,335,685,819.35
  5. Step 5: Solve for x
    x = 102,335,685,819.35/405,062.75
  6. Step 6: Final answer
    x = 252,641.56

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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.