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Finding the Fourth Proportional to 290,468.10, 405,825.90 and 290,468.10

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Solution

The fourth proportional to 290,468.10, 405,825.90 and 290,468.10 is: 405,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,468.10 : 405,825.90 = 290,468.10 : x
  2. Step 2: Convert to fraction form
    290,468.10/405,825.90 = 290,468.10/x
  3. Step 3: Cross multiply
    290,468.10x = 405,825.90 × 290,468.10
  4. Step 4: Simplify right side
    290,468.10x = 117,879,478,103.79
  5. Step 5: Solve for x
    x = 117,879,478,103.79/290,468.10
  6. Step 6: Final answer
    x = 405,825.90

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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.