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Finding the Fourth Proportional to 320,112.36, 479,785.01 and 149,103.54

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Solution

The fourth proportional to 320,112.36, 479,785.01 and 149,103.54 is: 223,476.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,112.36 : 479,785.01 = 149,103.54 : x
  2. Step 2: Convert to fraction form
    320,112.36/479,785.01 = 149,103.54/x
  3. Step 3: Cross multiply
    320,112.36x = 479,785.01 × 149,103.54
  4. Step 4: Simplify right side
    320,112.36x = 71,537,642,684.42
  5. Step 5: Solve for x
    x = 71,537,642,684.42/320,112.36
  6. Step 6: Final answer
    x = 223,476.67

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1.5x scale

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.