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Finding the Fourth Proportional to 258,446.60, 387,682.70 and 134,030.60

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Solution

The fourth proportional to 258,446.60, 387,682.70 and 134,030.60 is: 201,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,446.60 : 387,682.70 = 134,030.60 : x
  2. Step 2: Convert to fraction form
    258,446.60/387,682.70 = 134,030.60/x
  3. Step 3: Cross multiply
    258,446.60x = 387,682.70 × 134,030.60
  4. Step 4: Simplify right side
    258,446.60x = 51,961,344,890.62
  5. Step 5: Solve for x
    x = 51,961,344,890.62/258,446.60
  6. Step 6: Final answer
    x = 201,052.54

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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.