Home / 286,721.32-427,933.84-281,991.32

Finding the Fourth Proportional to 286,721.32, 427,933.84 and 281,991.32

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Solution

The fourth proportional to 286,721.32, 427,933.84 and 281,991.32 is: 420,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,721.32 : 427,933.84 = 281,991.32 : x
  2. Step 2: Convert to fraction form
    286,721.32/427,933.84 = 281,991.32/x
  3. Step 3: Cross multiply
    286,721.32x = 427,933.84 × 281,991.32
  4. Step 4: Simplify right side
    286,721.32x = 120,673,628,414.27
  5. Step 5: Solve for x
    x = 120,673,628,414.27/286,721.32
  6. Step 6: Final answer
    x = 420,874.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.