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Finding the Fourth Proportional to 290,636.55, 401,126.61 and 169,777.44

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Solution

The fourth proportional to 290,636.55, 401,126.61 and 169,777.44 is: 234,321.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,636.55 : 401,126.61 = 169,777.44 : x
  2. Step 2: Convert to fraction form
    290,636.55/401,126.61 = 169,777.44/x
  3. Step 3: Cross multiply
    290,636.55x = 401,126.61 × 169,777.44
  4. Step 4: Simplify right side
    290,636.55x = 68,102,248,961.68
  5. Step 5: Solve for x
    x = 68,102,248,961.68/290,636.55
  6. Step 6: Final answer
    x = 234,321.01

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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.