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Finding the Fourth Proportional to 339,611.16, 469,141.77 and 321,675.03

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Solution

The fourth proportional to 339,611.16, 469,141.77 and 321,675.03 is: 444,364.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,611.16 : 469,141.77 = 321,675.03 : x
  2. Step 2: Convert to fraction form
    339,611.16/469,141.77 = 321,675.03/x
  3. Step 3: Cross multiply
    339,611.16x = 469,141.77 × 321,675.03
  4. Step 4: Simplify right side
    339,611.16x = 150,911,192,939.00
  5. Step 5: Solve for x
    x = 150,911,192,939.00/339,611.16
  6. Step 6: Final answer
    x = 444,364.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.