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Finding the Fourth Proportional to 352,516.06, 486,420.82 and 201,583.90

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Solution

The fourth proportional to 352,516.06, 486,420.82 and 201,583.90 is: 278,156.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,516.06 : 486,420.82 = 201,583.90 : x
  2. Step 2: Convert to fraction form
    352,516.06/486,420.82 = 201,583.90/x
  3. Step 3: Cross multiply
    352,516.06x = 486,420.82 × 201,583.90
  4. Step 4: Simplify right side
    352,516.06x = 98,054,605,936.80
  5. Step 5: Solve for x
    x = 98,054,605,936.80/352,516.06
  6. Step 6: Final answer
    x = 278,156.42

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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.