Home / 213,515.16-320,163.93-71,309.28

Finding the Fourth Proportional to 213,515.16, 320,163.93 and 71,309.28

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Solution

The fourth proportional to 213,515.16, 320,163.93 and 71,309.28 is: 106,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,515.16 : 320,163.93 = 71,309.28 : x
  2. Step 2: Convert to fraction form
    213,515.16/320,163.93 = 71,309.28/x
  3. Step 3: Cross multiply
    213,515.16x = 320,163.93 × 71,309.28
  4. Step 4: Simplify right side
    213,515.16x = 22,830,659,330.27
  5. Step 5: Solve for x
    x = 22,830,659,330.27/213,515.16
  6. Step 6: Final answer
    x = 106,927.58

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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.