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Finding the Fourth Proportional to 436,958.49, 655,473.30 and 121,415.43

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Solution

The fourth proportional to 436,958.49, 655,473.30 and 121,415.43 is: 182,133.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,958.49 : 655,473.30 = 121,415.43 : x
  2. Step 2: Convert to fraction form
    436,958.49/655,473.30 = 121,415.43/x
  3. Step 3: Cross multiply
    436,958.49x = 655,473.30 × 121,415.43
  4. Step 4: Simplify right side
    436,958.49x = 79,584,572,573.02
  5. Step 5: Solve for x
    x = 79,584,572,573.02/436,958.49
  6. Step 6: Final answer
    x = 182,133.03

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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.