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Finding the Fourth Proportional to 258,166.40, 387,198.40 and 125,046.40

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Solution

The fourth proportional to 258,166.40, 387,198.40 and 125,046.40 is: 187,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,166.40 : 387,198.40 = 125,046.40 : x
  2. Step 2: Convert to fraction form
    258,166.40/387,198.40 = 125,046.40/x
  3. Step 3: Cross multiply
    258,166.40x = 387,198.40 × 125,046.40
  4. Step 4: Simplify right side
    258,166.40x = 48,417,766,005.76
  5. Step 5: Solve for x
    x = 48,417,766,005.76/258,166.40
  6. Step 6: Final answer
    x = 187,544.80

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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.