Home / 278,908,326,076.20-418,362,489,114.30-90,273,289,982.10

Finding the Fourth Proportional to 278,908,326,076.20, 418,362,489,114.30 and 90,273,289,982.10

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Solution

The fourth proportional to 278,908,326,076.20, 418,362,489,114.30 and 90,273,289,982.10 is: 135,409,934,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,908,326,076.20 : 418,362,489,114.30 = 90,273,289,982.10 : x
  2. Step 2: Convert to fraction form
    278,908,326,076.20/418,362,489,114.30 = 90,273,289,982.10/x
  3. Step 3: Cross multiply
    278,908,326,076.20x = 418,362,489,114.30 × 90,273,289,982.10
  4. Step 4: Simplify right side
    278,908,326,076.20x = 37,766,958,297,448,359,919,616
  5. Step 5: Solve for x
    x = 37,766,958,297,448,359,919,616/278,908,326,076.20
  6. Step 6: Final answer
    x = 135,409,934,973.15

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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.