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Finding the Fourth Proportional to 436,896.60, 655,344.90 and 121,356.60

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Solution

The fourth proportional to 436,896.60, 655,344.90 and 121,356.60 is: 182,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,896.60 : 655,344.90 = 121,356.60 : x
  2. Step 2: Convert to fraction form
    436,896.60/655,344.90 = 121,356.60/x
  3. Step 3: Cross multiply
    436,896.60x = 655,344.90 × 121,356.60
  4. Step 4: Simplify right side
    436,896.60x = 79,530,428,891.34
  5. Step 5: Solve for x
    x = 79,530,428,891.34/436,896.60
  6. Step 6: Final answer
    x = 182,034.90

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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.