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Finding the Fourth Proportional to 309,672.84, 427,353.06 and 173,736.84

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Solution

The fourth proportional to 309,672.84, 427,353.06 and 173,736.84 is: 239,759.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,672.84 : 427,353.06 = 173,736.84 : x
  2. Step 2: Convert to fraction form
    309,672.84/427,353.06 = 173,736.84/x
  3. Step 3: Cross multiply
    309,672.84x = 427,353.06 × 173,736.84
  4. Step 4: Simplify right side
    309,672.84x = 74,246,970,208.73
  5. Step 5: Solve for x
    x = 74,246,970,208.73/309,672.84
  6. Step 6: Final answer
    x = 239,759.39

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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.