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Finding the Fourth Proportional to 281,150.60, 387,915.48 and 158,660.78

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Solution

The fourth proportional to 281,150.60, 387,915.48 and 158,660.78 is: 218,911.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,150.60 : 387,915.48 = 158,660.78 : x
  2. Step 2: Convert to fraction form
    281,150.60/387,915.48 = 158,660.78/x
  3. Step 3: Cross multiply
    281,150.60x = 387,915.48 × 158,660.78
  4. Step 4: Simplify right side
    281,150.60x = 61,546,970,691.30
  5. Step 5: Solve for x
    x = 61,546,970,691.30/281,150.60
  6. Step 6: Final answer
    x = 218,911.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.