Home / 259,007,421.60-388,511,132.40-130,012,912.80

Finding the Fourth Proportional to 259,007,421.60, 388,511,132.40 and 130,012,912.80

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Solution

The fourth proportional to 259,007,421.60, 388,511,132.40 and 130,012,912.80 is: 195,019,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,007,421.60 : 388,511,132.40 = 130,012,912.80 : x
  2. Step 2: Convert to fraction form
    259,007,421.60/388,511,132.40 = 130,012,912.80/x
  3. Step 3: Cross multiply
    259,007,421.60x = 388,511,132.40 × 130,012,912.80
  4. Step 4: Simplify right side
    259,007,421.60x = 50,511,463,978,550,448
  5. Step 5: Solve for x
    x = 50,511,463,978,550,448/259,007,421.60
  6. Step 6: Final answer
    x = 195,019,369.20

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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.