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Finding the Fourth Proportional to 306,555.98, 422,980.18 and 179,173.22

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Solution

The fourth proportional to 306,555.98, 422,980.18 and 179,173.22 is: 247,219.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,555.98 : 422,980.18 = 179,173.22 : x
  2. Step 2: Convert to fraction form
    306,555.98/422,980.18 = 179,173.22/x
  3. Step 3: Cross multiply
    306,555.98x = 422,980.18 × 179,173.22
  4. Step 4: Simplify right side
    306,555.98x = 75,786,718,283.95
  5. Step 5: Solve for x
    x = 75,786,718,283.95/306,555.98
  6. Step 6: Final answer
    x = 247,219.84

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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.