Home / 290,313,980.20-435,187,535.10-259,702,978.60

Finding the Fourth Proportional to 290,313,980.20, 435,187,535.10 and 259,702,978.60

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Solution

The fourth proportional to 290,313,980.20, 435,187,535.10 and 259,702,978.60 is: 389,300,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,313,980.20 : 435,187,535.10 = 259,702,978.60 : x
  2. Step 2: Convert to fraction form
    290,313,980.20/435,187,535.10 = 259,702,978.60/x
  3. Step 3: Cross multiply
    290,313,980.20x = 435,187,535.10 × 259,702,978.60
  4. Step 4: Simplify right side
    290,313,980.20x = 113,019,499,115,062,048
  5. Step 5: Solve for x
    x = 113,019,499,115,062,048/290,313,980.20
  6. Step 6: Final answer
    x = 389,300,918.40

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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.