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Finding the Fourth Proportional to 436,057.98, 654,080.49 and 120,507.90

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Solution

The fourth proportional to 436,057.98, 654,080.49 and 120,507.90 is: 180,760.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,057.98 : 654,080.49 = 120,507.90 : x
  2. Step 2: Convert to fraction form
    436,057.98/654,080.49 = 120,507.90/x
  3. Step 3: Cross multiply
    436,057.98x = 654,080.49 × 120,507.90
  4. Step 4: Simplify right side
    436,057.98x = 78,821,866,280.87
  5. Step 5: Solve for x
    x = 78,821,866,280.87/436,057.98
  6. Step 6: Final answer
    x = 180,760.06

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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.