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Finding the Fourth Proportional to 258,063.66, 387,150.80 and 89,589.33

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Solution

The fourth proportional to 258,063.66, 387,150.80 and 89,589.33 is: 134,403.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,063.66 : 387,150.80 = 89,589.33 : x
  2. Step 2: Convert to fraction form
    258,063.66/387,150.80 = 89,589.33/x
  3. Step 3: Cross multiply
    258,063.66x = 387,150.80 × 89,589.33
  4. Step 4: Simplify right side
    258,063.66x = 34,684,580,333.02
  5. Step 5: Solve for x
    x = 34,684,580,333.02/258,063.66
  6. Step 6: Final answer
    x = 134,403.19

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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.