Home / 213,933.04-320,907-101,555.36

Finding the Fourth Proportional to 213,933.04, 320,907 and 101,555.36

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Solution

The fourth proportional to 213,933.04, 320,907 and 101,555.36 is: 152,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,933.04 : 320,907 = 101,555.36 : x
  2. Step 2: Convert to fraction form
    213,933.04/320,907 = 101,555.36/x
  3. Step 3: Cross multiply
    213,933.04x = 320,907 × 101,555.36
  4. Step 4: Simplify right side
    213,933.04x = 32,589,825,911.52
  5. Step 5: Solve for x
    x = 32,589,825,911.52/213,933.04
  6. Step 6: Final answer
    x = 152,336.57

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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.