Home / 309,716.90-427,441.68-173,787.56

Finding the Fourth Proportional to 309,716.90, 427,441.68 and 173,787.56

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Solution

The fourth proportional to 309,716.90, 427,441.68 and 173,787.56 is: 239,844.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,716.90 : 427,441.68 = 173,787.56 : x
  2. Step 2: Convert to fraction form
    309,716.90/427,441.68 = 173,787.56/x
  3. Step 3: Cross multiply
    309,716.90x = 427,441.68 × 173,787.56
  4. Step 4: Simplify right side
    309,716.90x = 74,284,046,609.50
  5. Step 5: Solve for x
    x = 74,284,046,609.50/309,716.90
  6. Step 6: Final answer
    x = 239,844.99

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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.