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Finding the Fourth Proportional to 290,704.48, 401,281.78 and 169,885.02

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Solution

The fourth proportional to 290,704.48, 401,281.78 and 169,885.02 is: 234,505.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,704.48 : 401,281.78 = 169,885.02 : x
  2. Step 2: Convert to fraction form
    290,704.48/401,281.78 = 169,885.02/x
  3. Step 3: Cross multiply
    290,704.48x = 401,281.78 × 169,885.02
  4. Step 4: Simplify right side
    290,704.48x = 68,171,763,220.94
  5. Step 5: Solve for x
    x = 68,171,763,220.94/290,704.48
  6. Step 6: Final answer
    x = 234,505.38

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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.