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Finding the Fourth Proportional to 258,450.62, 387,676.06 and 98,489.25

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Solution

The fourth proportional to 258,450.62, 387,676.06 and 98,489.25 is: 147,733.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,450.62 : 387,676.06 = 98,489.25 : x
  2. Step 2: Convert to fraction form
    258,450.62/387,676.06 = 98,489.25/x
  3. Step 3: Cross multiply
    258,450.62x = 387,676.06 × 98,489.25
  4. Step 4: Simplify right side
    258,450.62x = 38,181,924,146.13
  5. Step 5: Solve for x
    x = 38,181,924,146.13/258,450.62
  6. Step 6: Final answer
    x = 147,733.93

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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.