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Finding the Fourth Proportional to 290,469.10, 405,827.30 and 290,469.10

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Solution

The fourth proportional to 290,469.10, 405,827.30 and 290,469.10 is: 405,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,469.10 : 405,827.30 = 290,469.10 : x
  2. Step 2: Convert to fraction form
    290,469.10/405,827.30 = 290,469.10/x
  3. Step 3: Cross multiply
    290,469.10x = 405,827.30 × 290,469.10
  4. Step 4: Simplify right side
    290,469.10x = 117,880,290,586.43
  5. Step 5: Solve for x
    x = 117,880,290,586.43/290,469.10
  6. Step 6: Final answer
    x = 405,827.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.