Home / 415,428.05-623,287.07-131,162.60

Finding the Fourth Proportional to 415,428.05, 623,287.07 and 131,162.60

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Solution

The fourth proportional to 415,428.05, 623,287.07 and 131,162.60 is: 196,789.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,428.05 : 623,287.07 = 131,162.60 : x
  2. Step 2: Convert to fraction form
    415,428.05/623,287.07 = 131,162.60/x
  3. Step 3: Cross multiply
    415,428.05x = 623,287.07 × 131,162.60
  4. Step 4: Simplify right side
    415,428.05x = 81,751,948,875.33
  5. Step 5: Solve for x
    x = 81,751,948,875.33/415,428.05
  6. Step 6: Final answer
    x = 196,789.67

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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.