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Finding the Fourth Proportional to 290,174.40, 436,233.60 and 251,683.20

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Solution

The fourth proportional to 290,174.40, 436,233.60 and 251,683.20 is: 378,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,174.40 : 436,233.60 = 251,683.20 : x
  2. Step 2: Convert to fraction form
    290,174.40/436,233.60 = 251,683.20/x
  3. Step 3: Cross multiply
    290,174.40x = 436,233.60 × 251,683.20
  4. Step 4: Simplify right side
    290,174.40x = 109,792,668,395.52
  5. Step 5: Solve for x
    x = 109,792,668,395.52/290,174.40
  6. Step 6: Final answer
    x = 378,367.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.