Home / 212,855,998.80-319,283,998.20-210,840,459.60

Finding the Fourth Proportional to 212,855,998.80, 319,283,998.20 and 210,840,459.60

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Solution

The fourth proportional to 212,855,998.80, 319,283,998.20 and 210,840,459.60 is: 316,260,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,855,998.80 : 319,283,998.20 = 210,840,459.60 : x
  2. Step 2: Convert to fraction form
    212,855,998.80/319,283,998.20 = 210,840,459.60/x
  3. Step 3: Cross multiply
    212,855,998.80x = 319,283,998.20 × 210,840,459.60
  4. Step 4: Simplify right side
    212,855,998.80x = 67,317,984,923,413,568
  5. Step 5: Solve for x
    x = 67,317,984,923,413,568/212,855,998.80
  6. Step 6: Final answer
    x = 316,260,689.40

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1.5x scale

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.