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Finding the Fourth Proportional to 290,766.35, 436,149.91 and 141,028.70

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Solution

The fourth proportional to 290,766.35, 436,149.91 and 141,028.70 is: 211,543.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,766.35 : 436,149.91 = 141,028.70 : x
  2. Step 2: Convert to fraction form
    290,766.35/436,149.91 = 141,028.70/x
  3. Step 3: Cross multiply
    290,766.35x = 436,149.91 × 141,028.70
  4. Step 4: Simplify right side
    290,766.35x = 61,509,652,262.57
  5. Step 5: Solve for x
    x = 61,509,652,262.57/290,766.35
  6. Step 6: Final answer
    x = 211,543.23

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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.