Home / 389,930.93-538,085.42-217,814.73

Finding the Fourth Proportional to 389,930.93, 538,085.42 and 217,814.73

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Solution

The fourth proportional to 389,930.93, 538,085.42 and 217,814.73 is: 300,573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,930.93 : 538,085.42 = 217,814.73 : x
  2. Step 2: Convert to fraction form
    389,930.93/538,085.42 = 217,814.73/x
  3. Step 3: Cross multiply
    389,930.93x = 538,085.42 × 217,814.73
  4. Step 4: Simplify right side
    389,930.93x = 117,202,930,474.24
  5. Step 5: Solve for x
    x = 117,202,930,474.24/389,930.93
  6. Step 6: Final answer
    x = 300,573.57

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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.