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Finding the Fourth Proportional to 439,469.80, 659,075.10 and 173,141.80

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Solution

The fourth proportional to 439,469.80, 659,075.10 and 173,141.80 is: 259,661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,469.80 : 659,075.10 = 173,141.80 : x
  2. Step 2: Convert to fraction form
    439,469.80/659,075.10 = 173,141.80/x
  3. Step 3: Cross multiply
    439,469.80x = 659,075.10 × 173,141.80
  4. Step 4: Simplify right side
    439,469.80x = 114,113,449,149.18
  5. Step 5: Solve for x
    x = 114,113,449,149.18/439,469.80
  6. Step 6: Final answer
    x = 259,661.64

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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.