Home / 431,292,165.20-646,938,247.80-172,692,974.60

Finding the Fourth Proportional to 431,292,165.20, 646,938,247.80 and 172,692,974.60

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Solution

The fourth proportional to 431,292,165.20, 646,938,247.80 and 172,692,974.60 is: 259,039,461.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,292,165.20 : 646,938,247.80 = 172,692,974.60 : x
  2. Step 2: Convert to fraction form
    431,292,165.20/646,938,247.80 = 172,692,974.60/x
  3. Step 3: Cross multiply
    431,292,165.20x = 646,938,247.80 × 172,692,974.60
  4. Step 4: Simplify right side
    431,292,165.20x = 111,721,690,395,093,888
  5. Step 5: Solve for x
    x = 111,721,690,395,093,888/431,292,165.20
  6. Step 6: Final answer
    x = 259,039,461.90

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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.