Home / 213,583.45-320,217-129,323.81

Finding the Fourth Proportional to 213,583.45, 320,217 and 129,323.81

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Solution

The fourth proportional to 213,583.45, 320,217 and 129,323.81 is: 193,889.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,583.45 : 320,217 = 129,323.81 : x
  2. Step 2: Convert to fraction form
    213,583.45/320,217 = 129,323.81/x
  3. Step 3: Cross multiply
    213,583.45x = 320,217 × 129,323.81
  4. Step 4: Simplify right side
    213,583.45x = 41,411,682,466.77
  5. Step 5: Solve for x
    x = 41,411,682,466.77/213,583.45
  6. Step 6: Final answer
    x = 193,889.94

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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.