Home / 225,678.81-339,047.17-212,911.49

Finding the Fourth Proportional to 225,678.81, 339,047.17 and 212,911.49

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Solution

The fourth proportional to 225,678.81, 339,047.17 and 212,911.49 is: 319,866.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,678.81 : 339,047.17 = 212,911.49 : x
  2. Step 2: Convert to fraction form
    225,678.81/339,047.17 = 212,911.49/x
  3. Step 3: Cross multiply
    225,678.81x = 339,047.17 × 212,911.49
  4. Step 4: Simplify right side
    225,678.81x = 72,187,036,553.18
  5. Step 5: Solve for x
    x = 72,187,036,553.18/225,678.81
  6. Step 6: Final answer
    x = 319,866.26

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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.