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Finding the Fourth Proportional to 309,276.06, 426,793.72 and 181,959.84

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Solution

The fourth proportional to 309,276.06, 426,793.72 and 181,959.84 is: 251,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,276.06 : 426,793.72 = 181,959.84 : x
  2. Step 2: Convert to fraction form
    309,276.06/426,793.72 = 181,959.84/x
  3. Step 3: Cross multiply
    309,276.06x = 426,793.72 × 181,959.84
  4. Step 4: Simplify right side
    309,276.06x = 77,659,317,004.20
  5. Step 5: Solve for x
    x = 77,659,317,004.20/309,276.06
  6. Step 6: Final answer
    x = 251,100.32

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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.