Home / 279,043,346.80-418,565,020.20-218,510,815.60

Finding the Fourth Proportional to 279,043,346.80, 418,565,020.20 and 218,510,815.60

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Solution

The fourth proportional to 279,043,346.80, 418,565,020.20 and 218,510,815.60 is: 327,766,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,043,346.80 : 418,565,020.20 = 218,510,815.60 : x
  2. Step 2: Convert to fraction form
    279,043,346.80/418,565,020.20 = 218,510,815.60/x
  3. Step 3: Cross multiply
    279,043,346.80x = 418,565,020.20 × 218,510,815.60
  4. Step 4: Simplify right side
    279,043,346.80x = 91,460,983,945,532,464
  5. Step 5: Solve for x
    x = 91,460,983,945,532,464/279,043,346.80
  6. Step 6: Final answer
    x = 327,766,223.40

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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.