Home / 256,080.20-384,120.30-89,846.60

Finding the Fourth Proportional to 256,080.20, 384,120.30 and 89,846.60

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Solution

The fourth proportional to 256,080.20, 384,120.30 and 89,846.60 is: 134,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,080.20 : 384,120.30 = 89,846.60 : x
  2. Step 2: Convert to fraction form
    256,080.20/384,120.30 = 89,846.60/x
  3. Step 3: Cross multiply
    256,080.20x = 384,120.30 × 89,846.60
  4. Step 4: Simplify right side
    256,080.20x = 34,511,902,945.98
  5. Step 5: Solve for x
    x = 34,511,902,945.98/256,080.20
  6. Step 6: Final answer
    x = 134,769.90

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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.