Home / 215,964.09-298,069.07-139,577.85

Finding the Fourth Proportional to 215,964.09, 298,069.07 and 139,577.85

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Solution

The fourth proportional to 215,964.09, 298,069.07 and 139,577.85 is: 192,642.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,964.09 : 298,069.07 = 139,577.85 : x
  2. Step 2: Convert to fraction form
    215,964.09/298,069.07 = 139,577.85/x
  3. Step 3: Cross multiply
    215,964.09x = 298,069.07 × 139,577.85
  4. Step 4: Simplify right side
    215,964.09x = 41,603,839,244.21
  5. Step 5: Solve for x
    x = 41,603,839,244.21/215,964.09
  6. Step 6: Final answer
    x = 192,642.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.