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Finding the Fourth Proportional to 518,775.44, 778,513.20 and 203,192.96

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Solution

The fourth proportional to 518,775.44, 778,513.20 and 203,192.96 is: 304,926.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,775.44 : 778,513.20 = 203,192.96 : x
  2. Step 2: Convert to fraction form
    518,775.44/778,513.20 = 203,192.96/x
  3. Step 3: Cross multiply
    518,775.44x = 778,513.20 × 203,192.96
  4. Step 4: Simplify right side
    518,775.44x = 158,188,401,507.07
  5. Step 5: Solve for x
    x = 158,188,401,507.07/518,775.44
  6. Step 6: Final answer
    x = 304,926.54

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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.