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Finding the Fourth Proportional to 250,352.40, 375,489.36 and 81,871.32

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Solution

The fourth proportional to 250,352.40, 375,489.36 and 81,871.32 is: 122,794.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,352.40 : 375,489.36 = 81,871.32 : x
  2. Step 2: Convert to fraction form
    250,352.40/375,489.36 = 81,871.32/x
  3. Step 3: Cross multiply
    250,352.40x = 375,489.36 × 81,871.32
  4. Step 4: Simplify right side
    250,352.40x = 30,741,809,549.16
  5. Step 5: Solve for x
    x = 30,741,809,549.16/250,352.40
  6. Step 6: Final answer
    x = 122,794.15

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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.