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Finding the Fourth Proportional to 300,920.40, 415,314.36 and 173,571.12

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Solution

The fourth proportional to 300,920.40, 415,314.36 and 173,571.12 is: 239,553.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,920.40 : 415,314.36 = 173,571.12 : x
  2. Step 2: Convert to fraction form
    300,920.40/415,314.36 = 173,571.12/x
  3. Step 3: Cross multiply
    300,920.40x = 415,314.36 × 173,571.12
  4. Step 4: Simplify right side
    300,920.40x = 72,086,578,617.28
  5. Step 5: Solve for x
    x = 72,086,578,617.28/300,920.40
  6. Step 6: Final answer
    x = 239,553.64

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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.