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Finding the Fourth Proportional to 290,747.98, 401,173.40 and 169,865.92

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Solution

The fourth proportional to 290,747.98, 401,173.40 and 169,865.92 is: 234,380.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,747.98 : 401,173.40 = 169,865.92 : x
  2. Step 2: Convert to fraction form
    290,747.98/401,173.40 = 169,865.92/x
  3. Step 3: Cross multiply
    290,747.98x = 401,173.40 × 169,865.92
  4. Step 4: Simplify right side
    290,747.98x = 68,145,688,670.53
  5. Step 5: Solve for x
    x = 68,145,688,670.53/290,747.98
  6. Step 6: Final answer
    x = 234,380.61

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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.