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Finding the Fourth Proportional to 436,012.38, 654,030.87 and 120,469.32

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Solution

The fourth proportional to 436,012.38, 654,030.87 and 120,469.32 is: 180,707.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,012.38 : 654,030.87 = 120,469.32 : x
  2. Step 2: Convert to fraction form
    436,012.38/654,030.87 = 120,469.32/x
  3. Step 3: Cross multiply
    436,012.38x = 654,030.87 × 120,469.32
  4. Step 4: Simplify right side
    436,012.38x = 78,790,654,167.91
  5. Step 5: Solve for x
    x = 78,790,654,167.91/436,012.38
  6. Step 6: Final answer
    x = 180,707.38

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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.