Home / 389,012.14-536,839.09-216,940.97

Finding the Fourth Proportional to 389,012.14, 536,839.09 and 216,940.97

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Solution

The fourth proportional to 389,012.14, 536,839.09 and 216,940.97 is: 299,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,012.14 : 536,839.09 = 216,940.97 : x
  2. Step 2: Convert to fraction form
    389,012.14/536,839.09 = 216,940.97/x
  3. Step 3: Cross multiply
    389,012.14x = 536,839.09 × 216,940.97
  4. Step 4: Simplify right side
    389,012.14x = 116,462,391,833.81
  5. Step 5: Solve for x
    x = 116,462,391,833.81/389,012.14
  6. Step 6: Final answer
    x = 299,379.84

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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.