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Finding the Fourth Proportional to 436,323.90, 654,412.94 and 120,812.70

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Solution

The fourth proportional to 436,323.90, 654,412.94 and 120,812.70 is: 181,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,323.90 : 654,412.94 = 120,812.70 : x
  2. Step 2: Convert to fraction form
    436,323.90/654,412.94 = 120,812.70/x
  3. Step 3: Cross multiply
    436,323.90x = 654,412.94 × 120,812.70
  4. Step 4: Simplify right side
    436,323.90x = 79,061,394,196.34
  5. Step 5: Solve for x
    x = 79,061,394,196.34/436,323.90
  6. Step 6: Final answer
    x = 181,198.86

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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.