Home / 305,745.49-421,914.57-169,788.05

Finding the Fourth Proportional to 305,745.49, 421,914.57 and 169,788.05

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Solution

The fourth proportional to 305,745.49, 421,914.57 and 169,788.05 is: 234,299.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,745.49 : 421,914.57 = 169,788.05 : x
  2. Step 2: Convert to fraction form
    305,745.49/421,914.57 = 169,788.05/x
  3. Step 3: Cross multiply
    305,745.49x = 421,914.57 × 169,788.05
  4. Step 4: Simplify right side
    305,745.49x = 71,636,051,897.85
  5. Step 5: Solve for x
    x = 71,636,051,897.85/305,745.49
  6. Step 6: Final answer
    x = 234,299.62

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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.