Home / 320,516.69-480,939.07-131,117.03

Finding the Fourth Proportional to 320,516.69, 480,939.07 and 131,117.03

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Solution

The fourth proportional to 320,516.69, 480,939.07 and 131,117.03 is: 196,742.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,516.69 : 480,939.07 = 131,117.03 : x
  2. Step 2: Convert to fraction form
    320,516.69/480,939.07 = 131,117.03/x
  3. Step 3: Cross multiply
    320,516.69x = 480,939.07 × 131,117.03
  4. Step 4: Simplify right side
    320,516.69x = 63,059,299,409.08
  5. Step 5: Solve for x
    x = 63,059,299,409.08/320,516.69
  6. Step 6: Final answer
    x = 196,742.64

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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.