Home / 311,956,617.04-430,524,369.48-172,740,331.60

Finding the Fourth Proportional to 311,956,617.04, 430,524,369.48 and 172,740,331.60

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Solution

The fourth proportional to 311,956,617.04, 430,524,369.48 and 172,740,331.60 is: 238,395,078.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,956,617.04 : 430,524,369.48 = 172,740,331.60 : x
  2. Step 2: Convert to fraction form
    311,956,617.04/430,524,369.48 = 172,740,331.60/x
  3. Step 3: Cross multiply
    311,956,617.04x = 430,524,369.48 × 172,740,331.60
  4. Step 4: Simplify right side
    311,956,617.04x = 74,368,922,345,856,128
  5. Step 5: Solve for x
    x = 74,368,922,345,856,128/311,956,617.04
  6. Step 6: Final answer
    x = 238,395,078.94

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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.