Home / 280,303,669.80-420,455,504.70-75,831,745.05

Finding the Fourth Proportional to 280,303,669.80, 420,455,504.70 and 75,831,745.05

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Solution

The fourth proportional to 280,303,669.80, 420,455,504.70 and 75,831,745.05 is: 113,747,617.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,303,669.80 : 420,455,504.70 = 75,831,745.05 : x
  2. Step 2: Convert to fraction form
    280,303,669.80/420,455,504.70 = 75,831,745.05/x
  3. Step 3: Cross multiply
    280,303,669.80x = 420,455,504.70 × 75,831,745.05
  4. Step 4: Simplify right side
    280,303,669.80x = 31,883,874,637,279,476
  5. Step 5: Solve for x
    x = 31,883,874,637,279,476/280,303,669.80
  6. Step 6: Final answer
    x = 113,747,617.58

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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.