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Finding the Fourth Proportional to 321,237.51, 481,880.84 and 84,576.75

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Solution

The fourth proportional to 321,237.51, 481,880.84 and 84,576.75 is: 126,871.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,237.51 : 481,880.84 = 84,576.75 : x
  2. Step 2: Convert to fraction form
    321,237.51/481,880.84 = 84,576.75/x
  3. Step 3: Cross multiply
    321,237.51x = 481,880.84 × 84,576.75
  4. Step 4: Simplify right side
    321,237.51x = 40,755,914,911.59
  5. Step 5: Solve for x
    x = 40,755,914,911.59/321,237.51
  6. Step 6: Final answer
    x = 126,871.59

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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.