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Finding the Fourth Proportional to 306,356.98, 422,656.66 and 190,016.63

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Solution

The fourth proportional to 306,356.98, 422,656.66 and 190,016.63 is: 262,151.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,356.98 : 422,656.66 = 190,016.63 : x
  2. Step 2: Convert to fraction form
    306,356.98/422,656.66 = 190,016.63/x
  3. Step 3: Cross multiply
    306,356.98x = 422,656.66 × 190,016.63
  4. Step 4: Simplify right side
    306,356.98x = 80,311,794,180.26
  5. Step 5: Solve for x
    x = 80,311,794,180.26/306,356.98
  6. Step 6: Final answer
    x = 262,151.02

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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.