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Finding the Fourth Proportional to 290,007.43, 435,059.33 and 121,540.42

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Solution

The fourth proportional to 290,007.43, 435,059.33 and 121,540.42 is: 182,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,007.43 : 435,059.33 = 121,540.42 : x
  2. Step 2: Convert to fraction form
    290,007.43/435,059.33 = 121,540.42/x
  3. Step 3: Cross multiply
    290,007.43x = 435,059.33 × 121,540.42
  4. Step 4: Simplify right side
    290,007.43x = 52,877,293,629.24
  5. Step 5: Solve for x
    x = 52,877,293,629.24/290,007.43
  6. Step 6: Final answer
    x = 182,330.83

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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.