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Finding the Fourth Proportional to 321,235.74, 481,815.34 and 84,596.87

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Solution

The fourth proportional to 321,235.74, 481,815.34 and 84,596.87 is: 126,885.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,235.74 : 481,815.34 = 84,596.87 : x
  2. Step 2: Convert to fraction form
    321,235.74/481,815.34 = 84,596.87/x
  3. Step 3: Cross multiply
    321,235.74x = 481,815.34 × 84,596.87
  4. Step 4: Simplify right side
    321,235.74x = 40,760,070,675.03
  5. Step 5: Solve for x
    x = 40,760,070,675.03/321,235.74
  6. Step 6: Final answer
    x = 126,885.23

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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.