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Finding the Fourth Proportional to 389,491.98, 537,524.01 and 219,722.46

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Solution

The fourth proportional to 389,491.98, 537,524.01 and 219,722.46 is: 303,231.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,491.98 : 537,524.01 = 219,722.46 : x
  2. Step 2: Convert to fraction form
    389,491.98/537,524.01 = 219,722.46/x
  3. Step 3: Cross multiply
    389,491.98x = 537,524.01 × 219,722.46
  4. Step 4: Simplify right side
    389,491.98x = 118,106,097,786.27
  5. Step 5: Solve for x
    x = 118,106,097,786.27/389,491.98
  6. Step 6: Final answer
    x = 303,231.14

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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.