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Finding the Fourth Proportional to 290,489.89, 435,804.90 and 100,922.65

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Solution

The fourth proportional to 290,489.89, 435,804.90 and 100,922.65 is: 151,408.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,489.89 : 435,804.90 = 100,922.65 : x
  2. Step 2: Convert to fraction form
    290,489.89/435,804.90 = 100,922.65/x
  3. Step 3: Cross multiply
    290,489.89x = 435,804.90 × 100,922.65
  4. Step 4: Simplify right side
    290,489.89x = 43,982,585,390.99
  5. Step 5: Solve for x
    x = 43,982,585,390.99/290,489.89
  6. Step 6: Final answer
    x = 151,408.32

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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.