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Finding the Fourth Proportional to 290,355.62, 435,532.48 and 77,144.85

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Solution

The fourth proportional to 290,355.62, 435,532.48 and 77,144.85 is: 115,717.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,355.62 : 435,532.48 = 77,144.85 : x
  2. Step 2: Convert to fraction form
    290,355.62/435,532.48 = 77,144.85/x
  3. Step 3: Cross multiply
    290,355.62x = 435,532.48 × 77,144.85
  4. Step 4: Simplify right side
    290,355.62x = 33,599,087,646.87
  5. Step 5: Solve for x
    x = 33,599,087,646.87/290,355.62
  6. Step 6: Final answer
    x = 115,717.02

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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.