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Finding the Fourth Proportional to 309,274.06, 426,790.96 and 181,957.84

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Solution

The fourth proportional to 309,274.06, 426,790.96 and 181,957.84 is: 251,097.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,274.06 : 426,790.96 = 181,957.84 : x
  2. Step 2: Convert to fraction form
    309,274.06/426,790.96 = 181,957.84/x
  3. Step 3: Cross multiply
    309,274.06x = 426,790.96 × 181,957.84
  4. Step 4: Simplify right side
    309,274.06x = 77,657,961,213.13
  5. Step 5: Solve for x
    x = 77,657,961,213.13/309,274.06
  6. Step 6: Final answer
    x = 251,097.56

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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.