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Finding the Fourth Proportional to 439,467.80, 659,072.10 and 173,139.80

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Solution

The fourth proportional to 439,467.80, 659,072.10 and 173,139.80 is: 259,658.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,467.80 : 659,072.10 = 173,139.80 : x
  2. Step 2: Convert to fraction form
    439,467.80/659,072.10 = 173,139.80/x
  3. Step 3: Cross multiply
    439,467.80x = 659,072.10 × 173,139.80
  4. Step 4: Simplify right side
    439,467.80x = 114,111,611,579.58
  5. Step 5: Solve for x
    x = 114,111,611,579.58/439,467.80
  6. Step 6: Final answer
    x = 259,658.64

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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.