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Finding the Fourth Proportional to 178,843.20, 268,264.80 and 115,857.60

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Solution

The fourth proportional to 178,843.20, 268,264.80 and 115,857.60 is: 173,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,843.20 : 268,264.80 = 115,857.60 : x
  2. Step 2: Convert to fraction form
    178,843.20/268,264.80 = 115,857.60/x
  3. Step 3: Cross multiply
    178,843.20x = 268,264.80 × 115,857.60
  4. Step 4: Simplify right side
    178,843.20x = 31,080,515,892.48
  5. Step 5: Solve for x
    x = 31,080,515,892.48/178,843.20
  6. Step 6: Final answer
    x = 173,786.40

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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.