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Finding the Fourth Proportional to 327,690.68, 451,980.20 and 218,740.14

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Solution

The fourth proportional to 327,690.68, 451,980.20 and 218,740.14 is: 301,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,690.68 : 451,980.20 = 218,740.14 : x
  2. Step 2: Convert to fraction form
    327,690.68/451,980.20 = 218,740.14/x
  3. Step 3: Cross multiply
    327,690.68x = 451,980.20 × 218,740.14
  4. Step 4: Simplify right side
    327,690.68x = 98,866,212,772.08
  5. Step 5: Solve for x
    x = 98,866,212,772.08/327,690.68
  6. Step 6: Final answer
    x = 301,705.91

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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.