Home / 279,947,608.40-419,921,412.60-85,888,974.80

Finding the Fourth Proportional to 279,947,608.40, 419,921,412.60 and 85,888,974.80

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Solution

The fourth proportional to 279,947,608.40, 419,921,412.60 and 85,888,974.80 is: 128,833,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,947,608.40 : 419,921,412.60 = 85,888,974.80 : x
  2. Step 2: Convert to fraction form
    279,947,608.40/419,921,412.60 = 85,888,974.80/x
  3. Step 3: Cross multiply
    279,947,608.40x = 419,921,412.60 × 85,888,974.80
  4. Step 4: Simplify right side
    279,947,608.40x = 36,066,619,624,781,800
  5. Step 5: Solve for x
    x = 36,066,619,624,781,800/279,947,608.40
  6. Step 6: Final answer
    x = 128,833,462.20

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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.