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Finding the Fourth Proportional to 321,042.57, 481,527.41 and 84,403.71

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Solution

The fourth proportional to 321,042.57, 481,527.41 and 84,403.71 is: 126,595.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,042.57 : 481,527.41 = 84,403.71 : x
  2. Step 2: Convert to fraction form
    321,042.57/481,527.41 = 84,403.71/x
  3. Step 3: Cross multiply
    321,042.57x = 481,527.41 × 84,403.71
  4. Step 4: Simplify right side
    321,042.57x = 40,642,699,448.67
  5. Step 5: Solve for x
    x = 40,642,699,448.67/321,042.57
  6. Step 6: Final answer
    x = 126,595.98

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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.