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Finding the Fourth Proportional to 309,272.06, 426,788.18 and 181,955.84

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Solution

The fourth proportional to 309,272.06, 426,788.18 and 181,955.84 is: 251,094.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,272.06 : 426,788.18 = 181,955.84 : x
  2. Step 2: Convert to fraction form
    309,272.06/426,788.18 = 181,955.84/x
  3. Step 3: Cross multiply
    309,272.06x = 426,788.18 × 181,955.84
  4. Step 4: Simplify right side
    309,272.06x = 77,656,601,793.97
  5. Step 5: Solve for x
    x = 77,656,601,793.97/309,272.06
  6. Step 6: Final answer
    x = 251,094.79

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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.