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Finding the Fourth Proportional to 579,860.82, 869,850.72 and 200,781

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Solution

The fourth proportional to 579,860.82, 869,850.72 and 200,781 is: 301,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,860.82 : 869,850.72 = 200,781 : x
  2. Step 2: Convert to fraction form
    579,860.82/869,850.72 = 200,781/x
  3. Step 3: Cross multiply
    579,860.82x = 869,850.72 × 200,781
  4. Step 4: Simplify right side
    579,860.82x = 174,649,497,412.32
  5. Step 5: Solve for x
    x = 174,649,497,412.32/579,860.82
  6. Step 6: Final answer
    x = 301,192.10

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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.