Home / 431,292,136.20-646,938,204.30-172,692,945.60

Finding the Fourth Proportional to 431,292,136.20, 646,938,204.30 and 172,692,945.60

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Solution

The fourth proportional to 431,292,136.20, 646,938,204.30 and 172,692,945.60 is: 259,039,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,292,136.20 : 646,938,204.30 = 172,692,945.60 : x
  2. Step 2: Convert to fraction form
    431,292,136.20/646,938,204.30 = 172,692,945.60/x
  3. Step 3: Cross multiply
    431,292,136.20x = 646,938,204.30 × 172,692,945.60
  4. Step 4: Simplify right side
    431,292,136.20x = 111,721,664,121,741,568
  5. Step 5: Solve for x
    x = 111,721,664,121,741,568/431,292,136.20
  6. Step 6: Final answer
    x = 259,039,418.40

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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.