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Finding the Fourth Proportional to 290,747.61, 401,172.88 and 169,865.54

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Solution

The fourth proportional to 290,747.61, 401,172.88 and 169,865.54 is: 234,380.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,747.61 : 401,172.88 = 169,865.54 : x
  2. Step 2: Convert to fraction form
    290,747.61/401,172.88 = 169,865.54/x
  3. Step 3: Cross multiply
    290,747.61x = 401,172.88 × 169,865.54
  4. Step 4: Simplify right side
    290,747.61x = 68,145,447,894.56
  5. Step 5: Solve for x
    x = 68,145,447,894.56/290,747.61
  6. Step 6: Final answer
    x = 234,380.08

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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.