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Finding the Fourth Proportional to 380,111.20, 570,093.90 and 113,880.40

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Solution

The fourth proportional to 380,111.20, 570,093.90 and 113,880.40 is: 170,798.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,111.20 : 570,093.90 = 113,880.40 : x
  2. Step 2: Convert to fraction form
    380,111.20/570,093.90 = 113,880.40/x
  3. Step 3: Cross multiply
    380,111.20x = 570,093.90 × 113,880.40
  4. Step 4: Simplify right side
    380,111.20x = 64,922,521,369.56
  5. Step 5: Solve for x
    x = 64,922,521,369.56/380,111.20
  6. Step 6: Final answer
    x = 170,798.76

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1.5x scale

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.