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Finding the Fourth Proportional to 225,915.72, 338,874.75 and 76,157.32

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Solution

The fourth proportional to 225,915.72, 338,874.75 and 76,157.32 is: 114,236.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,915.72 : 338,874.75 = 76,157.32 : x
  2. Step 2: Convert to fraction form
    225,915.72/338,874.75 = 76,157.32/x
  3. Step 3: Cross multiply
    225,915.72x = 338,874.75 × 76,157.32
  4. Step 4: Simplify right side
    225,915.72x = 25,807,792,775.67
  5. Step 5: Solve for x
    x = 25,807,792,775.67/225,915.72
  6. Step 6: Final answer
    x = 114,236.37

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1.5x scale

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.