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Finding the Fourth Proportional to 409,080.06, 613,241.21 and 208,959.06

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Solution

The fourth proportional to 409,080.06, 613,241.21 and 208,959.06 is: 313,245.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,080.06 : 613,241.21 = 208,959.06 : x
  2. Step 2: Convert to fraction form
    409,080.06/613,241.21 = 208,959.06/x
  3. Step 3: Cross multiply
    409,080.06x = 613,241.21 × 208,959.06
  4. Step 4: Simplify right side
    409,080.06x = 128,142,305,750.07
  5. Step 5: Solve for x
    x = 128,142,305,750.07/409,080.06
  6. Step 6: Final answer
    x = 313,245.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.