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Finding the Fourth Proportional to 436,957.49, 655,471.80 and 121,414.43

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Solution

The fourth proportional to 436,957.49, 655,471.80 and 121,414.43 is: 182,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,957.49 : 655,471.80 = 121,414.43 : x
  2. Step 2: Convert to fraction form
    436,957.49/655,471.80 = 121,414.43/x
  3. Step 3: Cross multiply
    436,957.49x = 655,471.80 × 121,414.43
  4. Step 4: Simplify right side
    436,957.49x = 79,583,734,978.07
  5. Step 5: Solve for x
    x = 79,583,734,978.07/436,957.49
  6. Step 6: Final answer
    x = 182,131.53

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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.