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Finding the Fourth Proportional to 290,754.25, 436,131.38 and 77,522.89

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Solution

The fourth proportional to 290,754.25, 436,131.38 and 77,522.89 is: 116,284.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,754.25 : 436,131.38 = 77,522.89 : x
  2. Step 2: Convert to fraction form
    290,754.25/436,131.38 = 77,522.89/x
  3. Step 3: Cross multiply
    290,754.25x = 436,131.38 × 77,522.89
  4. Step 4: Simplify right side
    290,754.25x = 33,810,164,609.67
  5. Step 5: Solve for x
    x = 33,810,164,609.67/290,754.25
  6. Step 6: Final answer
    x = 116,284.34

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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.