Home / 212,629,998.80-318,944,998.20-210,614,459.60

Finding the Fourth Proportional to 212,629,998.80, 318,944,998.20 and 210,614,459.60

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Solution

The fourth proportional to 212,629,998.80, 318,944,998.20 and 210,614,459.60 is: 315,921,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,629,998.80 : 318,944,998.20 = 210,614,459.60 : x
  2. Step 2: Convert to fraction form
    212,629,998.80/318,944,998.20 = 210,614,459.60/x
  3. Step 3: Cross multiply
    212,629,998.80x = 318,944,998.20 × 210,614,459.60
  4. Step 4: Simplify right side
    212,629,998.80x = 67,174,428,438,015,968
  5. Step 5: Solve for x
    x = 67,174,428,438,015,968/212,629,998.80
  6. Step 6: Final answer
    x = 315,921,689.40

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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.