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Finding the Fourth Proportional to 290,361.23, 435,520.32 and 121,874.75

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Solution

The fourth proportional to 290,361.23, 435,520.32 and 121,874.75 is: 182,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,361.23 : 435,520.32 = 121,874.75 : x
  2. Step 2: Convert to fraction form
    290,361.23/435,520.32 = 121,874.75/x
  3. Step 3: Cross multiply
    290,361.23x = 435,520.32 × 121,874.75
  4. Step 4: Simplify right side
    290,361.23x = 53,078,930,686.16
  5. Step 5: Solve for x
    x = 53,078,930,686.16/290,361.23
  6. Step 6: Final answer
    x = 182,803.09

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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.