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Finding the Fourth Proportional to 238,087.60, 357,144.36 and 71,871.28

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Solution

The fourth proportional to 238,087.60, 357,144.36 and 71,871.28 is: 107,810.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,087.60 : 357,144.36 = 71,871.28 : x
  2. Step 2: Convert to fraction form
    238,087.60/357,144.36 = 71,871.28/x
  3. Step 3: Cross multiply
    238,087.60x = 357,144.36 × 71,871.28
  4. Step 4: Simplify right side
    238,087.60x = 25,668,422,297.98
  5. Step 5: Solve for x
    x = 25,668,422,297.98/238,087.60
  6. Step 6: Final answer
    x = 107,810.83

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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.