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Finding the Fourth Proportional to 518,441.25, 777,968.06 and 218,902.44

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Solution

The fourth proportional to 518,441.25, 777,968.06 and 218,902.44 is: 328,482.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,441.25 : 777,968.06 = 218,902.44 : x
  2. Step 2: Convert to fraction form
    518,441.25/777,968.06 = 218,902.44/x
  3. Step 3: Cross multiply
    518,441.25x = 777,968.06 × 218,902.44
  4. Step 4: Simplify right side
    518,441.25x = 170,299,105,481.55
  5. Step 5: Solve for x
    x = 170,299,105,481.55/518,441.25
  6. Step 6: Final answer
    x = 328,482.94

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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.