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Finding the Fourth Proportional to 321,069.83, 481,566.41 and 84,430.94

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Solution

The fourth proportional to 321,069.83, 481,566.41 and 84,430.94 is: 126,636.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,069.83 : 481,566.41 = 84,430.94 : x
  2. Step 2: Convert to fraction form
    321,069.83/481,566.41 = 84,430.94/x
  3. Step 3: Cross multiply
    321,069.83x = 481,566.41 × 84,430.94
  4. Step 4: Simplify right side
    321,069.83x = 40,659,104,246.57
  5. Step 5: Solve for x
    x = 40,659,104,246.57/321,069.83
  6. Step 6: Final answer
    x = 126,636.33

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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.