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Finding the Fourth Proportional to 253,120.36, 379,680.72 and 75,627.40

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Solution

The fourth proportional to 253,120.36, 379,680.72 and 75,627.40 is: 113,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,120.36 : 379,680.72 = 75,627.40 : x
  2. Step 2: Convert to fraction form
    253,120.36/379,680.72 = 75,627.40/x
  3. Step 3: Cross multiply
    253,120.36x = 379,680.72 × 75,627.40
  4. Step 4: Simplify right side
    253,120.36x = 28,714,265,683.73
  5. Step 5: Solve for x
    x = 28,714,265,683.73/253,120.36
  6. Step 6: Final answer
    x = 113,441.15

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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.