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Finding the Fourth Proportional to 258,260.96, 387,169.54 and 89,759.39

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Solution

The fourth proportional to 258,260.96, 387,169.54 and 89,759.39 is: 134,561.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,260.96 : 387,169.54 = 89,759.39 : x
  2. Step 2: Convert to fraction form
    258,260.96/387,169.54 = 89,759.39/x
  3. Step 3: Cross multiply
    258,260.96x = 387,169.54 × 89,759.39
  4. Step 4: Simplify right side
    258,260.96x = 34,752,099,576.73
  5. Step 5: Solve for x
    x = 34,752,099,576.73/258,260.96
  6. Step 6: Final answer
    x = 134,561.96

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1.5x scale

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.