Home / 306,470.40-422,928-179,120.76

Finding the Fourth Proportional to 306,470.40, 422,928 and 179,120.76

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Solution

The fourth proportional to 306,470.40, 422,928 and 179,120.76 is: 247,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,470.40 : 422,928 = 179,120.76 : x
  2. Step 2: Convert to fraction form
    306,470.40/422,928 = 179,120.76/x
  3. Step 3: Cross multiply
    306,470.40x = 422,928 × 179,120.76
  4. Step 4: Simplify right side
    306,470.40x = 75,755,184,785.28
  5. Step 5: Solve for x
    x = 75,755,184,785.28/306,470.40
  6. Step 6: Final answer
    x = 247,185.98

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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.