Home / 209,284,607.78-313,715,880.53-131,617,018.64

Finding the Fourth Proportional to 209,284,607.78, 313,715,880.53 and 131,617,018.64

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Solution

The fourth proportional to 209,284,607.78, 313,715,880.53 and 131,617,018.64 is: 197,292,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,284,607.78 : 313,715,880.53 = 131,617,018.64 : x
  2. Step 2: Convert to fraction form
    209,284,607.78/313,715,880.53 = 131,617,018.64/x
  3. Step 3: Cross multiply
    209,284,607.78x = 313,715,880.53 × 131,617,018.64
  4. Step 4: Simplify right side
    209,284,607.78x = 41,290,348,893,154,360
  5. Step 5: Solve for x
    x = 41,290,348,893,154,360/209,284,607.78
  6. Step 6: Final answer
    x = 197,292,812.55

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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.