Home / 280,115,583.21-420,100,036.35-83,325,974.84

Finding the Fourth Proportional to 280,115,583.21, 420,100,036.35 and 83,325,974.84

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Solution

The fourth proportional to 280,115,583.21, 420,100,036.35 and 83,325,974.84 is: 124,967,146.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,115,583.21 : 420,100,036.35 = 83,325,974.84 : x
  2. Step 2: Convert to fraction form
    280,115,583.21/420,100,036.35 = 83,325,974.84/x
  3. Step 3: Cross multiply
    280,115,583.21x = 420,100,036.35 × 83,325,974.84
  4. Step 4: Simplify right side
    280,115,583.21x = 35,005,245,058,345,588
  5. Step 5: Solve for x
    x = 35,005,245,058,345,588/280,115,583.21
  6. Step 6: Final answer
    x = 124,967,146.27

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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.