Home / 431,211,107.20-646,816,660.80-172,298,300.80

Finding the Fourth Proportional to 431,211,107.20, 646,816,660.80 and 172,298,300.80

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Solution

The fourth proportional to 431,211,107.20, 646,816,660.80 and 172,298,300.80 is: 258,447,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,211,107.20 : 646,816,660.80 = 172,298,300.80 : x
  2. Step 2: Convert to fraction form
    431,211,107.20/646,816,660.80 = 172,298,300.80/x
  3. Step 3: Cross multiply
    431,211,107.20x = 646,816,660.80 × 172,298,300.80
  4. Step 4: Simplify right side
    431,211,107.20x = 111,445,411,584,969,968
  5. Step 5: Solve for x
    x = 111,445,411,584,969,968/431,211,107.20
  6. Step 6: Final answer
    x = 258,447,451.20

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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.