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Finding the Fourth Proportional to 383,910.51, 575,865.71 and 131,193.19

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Solution

The fourth proportional to 383,910.51, 575,865.71 and 131,193.19 is: 196,789.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,910.51 : 575,865.71 = 131,193.19 : x
  2. Step 2: Convert to fraction form
    383,910.51/575,865.71 = 131,193.19/x
  3. Step 3: Cross multiply
    383,910.51x = 575,865.71 × 131,193.19
  4. Step 4: Simplify right side
    383,910.51x = 75,549,659,506.51
  5. Step 5: Solve for x
    x = 75,549,659,506.51/383,910.51
  6. Step 6: Final answer
    x = 196,789.77

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Double scale
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Similar ratio
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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.