Home / 405,978,020.26-560,255,042.73-220,341,261.22

Finding the Fourth Proportional to 405,978,020.26, 560,255,042.73 and 220,341,261.22

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Solution

The fourth proportional to 405,978,020.26, 560,255,042.73 and 220,341,261.22 is: 304,073,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,978,020.26 : 560,255,042.73 = 220,341,261.22 : x
  2. Step 2: Convert to fraction form
    405,978,020.26/560,255,042.73 = 220,341,261.22/x
  3. Step 3: Cross multiply
    405,978,020.26x = 560,255,042.73 × 220,341,261.22
  4. Step 4: Simplify right side
    405,978,020.26x = 123,447,302,719,993,200
  5. Step 5: Solve for x
    x = 123,447,302,719,993,200/405,978,020.26
  6. Step 6: Final answer
    x = 304,073,857.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.