Home / 209,284,509.79-313,715,733.75-131,616,920.43

Finding the Fourth Proportional to 209,284,509.79, 313,715,733.75 and 131,616,920.43

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Solution

The fourth proportional to 209,284,509.79, 313,715,733.75 and 131,616,920.43 is: 197,292,665.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,284,509.79 : 313,715,733.75 = 131,616,920.43 : x
  2. Step 2: Convert to fraction form
    209,284,509.79/313,715,733.75 = 131,616,920.43/x
  3. Step 3: Cross multiply
    209,284,509.79x = 313,715,733.75 × 131,616,920.43
  4. Step 4: Simplify right side
    209,284,509.79x = 41,290,298,766,612,816
  5. Step 5: Solve for x
    x = 41,290,298,766,612,816/209,284,509.79
  6. Step 6: Final answer
    x = 197,292,665.41

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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.