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Finding the Fourth Proportional to 258,166.80, 387,359.55 and 163,469.70

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Solution

The fourth proportional to 258,166.80, 387,359.55 and 163,469.70 is: 245,273.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,166.80 : 387,359.55 = 163,469.70 : x
  2. Step 2: Convert to fraction form
    258,166.80/387,359.55 = 163,469.70/x
  3. Step 3: Cross multiply
    258,166.80x = 387,359.55 × 163,469.70
  4. Step 4: Simplify right side
    258,166.80x = 63,321,549,430.64
  5. Step 5: Solve for x
    x = 63,321,549,430.64/258,166.80
  6. Step 6: Final answer
    x = 245,273.79

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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.