Home / 309,107.56-426,579-173,147.32

Finding the Fourth Proportional to 309,107.56, 426,579 and 173,147.32

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Solution

The fourth proportional to 309,107.56, 426,579 and 173,147.32 is: 238,949.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,107.56 : 426,579 = 173,147.32 : x
  2. Step 2: Convert to fraction form
    309,107.56/426,579 = 173,147.32/x
  3. Step 3: Cross multiply
    309,107.56x = 426,579 × 173,147.32
  4. Step 4: Simplify right side
    309,107.56x = 73,861,010,618.28
  5. Step 5: Solve for x
    x = 73,861,010,618.28/309,107.56
  6. Step 6: Final answer
    x = 238,949.22

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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.