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Finding the Fourth Proportional to 290,930.38, 436,391.18 and 130,893.30

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Solution

The fourth proportional to 290,930.38, 436,391.18 and 130,893.30 is: 196,337.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,930.38 : 436,391.18 = 130,893.30 : x
  2. Step 2: Convert to fraction form
    290,930.38/436,391.18 = 130,893.30/x
  3. Step 3: Cross multiply
    290,930.38x = 436,391.18 × 130,893.30
  4. Step 4: Simplify right side
    290,930.38x = 57,120,681,641.09
  5. Step 5: Solve for x
    x = 57,120,681,641.09/290,930.38
  6. Step 6: Final answer
    x = 196,337.97

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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.