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Finding the Fourth Proportional to 311,342.60, 467,079.56 and 100,964.20

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Solution

The fourth proportional to 311,342.60, 467,079.56 and 100,964.20 is: 151,467.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,342.60 : 467,079.56 = 100,964.20 : x
  2. Step 2: Convert to fraction form
    311,342.60/467,079.56 = 100,964.20/x
  3. Step 3: Cross multiply
    311,342.60x = 467,079.56 × 100,964.20
  4. Step 4: Simplify right side
    311,342.60x = 47,158,314,111.75
  5. Step 5: Solve for x
    x = 47,158,314,111.75/311,342.60
  6. Step 6: Final answer
    x = 151,467.59

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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.