Home / 290,313,455.20-435,186,747.60-259,702,453.60

Finding the Fourth Proportional to 290,313,455.20, 435,186,747.60 and 259,702,453.60

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Solution

The fourth proportional to 290,313,455.20, 435,186,747.60 and 259,702,453.60 is: 389,300,130.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,313,455.20 : 435,186,747.60 = 259,702,453.60 : x
  2. Step 2: Convert to fraction form
    290,313,455.20/435,186,747.60 = 259,702,453.60/x
  3. Step 3: Cross multiply
    290,313,455.20x = 435,186,747.60 × 259,702,453.60
  4. Step 4: Simplify right side
    290,313,455.20x = 113,019,066,125,923,920
  5. Step 5: Solve for x
    x = 113,019,066,125,923,920/290,313,455.20
  6. Step 6: Final answer
    x = 389,300,130.95

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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.