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Finding the Fourth Proportional to 258,256.59, 387,163.02 and 89,755.02

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Solution

The fourth proportional to 258,256.59, 387,163.02 and 89,755.02 is: 134,555.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,256.59 : 387,163.02 = 89,755.02 : x
  2. Step 2: Convert to fraction form
    258,256.59/387,163.02 = 89,755.02/x
  3. Step 3: Cross multiply
    258,256.59x = 387,163.02 × 89,755.02
  4. Step 4: Simplify right side
    258,256.59x = 34,749,824,266.78
  5. Step 5: Solve for x
    x = 34,749,824,266.78/258,256.59
  6. Step 6: Final answer
    x = 134,555.42

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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.