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Finding the Fourth Proportional to 309,331.88, 426,857.76 and 181,982.84

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Solution

The fourth proportional to 309,331.88, 426,857.76 and 181,982.84 is: 251,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,331.88 : 426,857.76 = 181,982.84 : x
  2. Step 2: Convert to fraction form
    309,331.88/426,857.76 = 181,982.84/x
  3. Step 3: Cross multiply
    309,331.88x = 426,857.76 × 181,982.84
  4. Step 4: Simplify right side
    309,331.88x = 77,680,787,440.84
  5. Step 5: Solve for x
    x = 77,680,787,440.84/309,331.88
  6. Step 6: Final answer
    x = 251,124.42

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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.