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Finding the Fourth Proportional to 379,991.82, 524,369.55 and 207,906.06

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Solution

The fourth proportional to 379,991.82, 524,369.55 and 207,906.06 is: 286,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,991.82 : 524,369.55 = 207,906.06 : x
  2. Step 2: Convert to fraction form
    379,991.82/524,369.55 = 207,906.06/x
  3. Step 3: Cross multiply
    379,991.82x = 524,369.55 × 207,906.06
  4. Step 4: Simplify right side
    379,991.82x = 109,019,607,124.47
  5. Step 5: Solve for x
    x = 109,019,607,124.47/379,991.82
  6. Step 6: Final answer
    x = 286,899.88

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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.