Home / 280,821.44-387,676.32-190,654.40

Finding the Fourth Proportional to 280,821.44, 387,676.32 and 190,654.40

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Solution

The fourth proportional to 280,821.44, 387,676.32 and 190,654.40 is: 263,199.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,821.44 : 387,676.32 = 190,654.40 : x
  2. Step 2: Convert to fraction form
    280,821.44/387,676.32 = 190,654.40/x
  3. Step 3: Cross multiply
    280,821.44x = 387,676.32 × 190,654.40
  4. Step 4: Simplify right side
    280,821.44x = 73,912,196,183.81
  5. Step 5: Solve for x
    x = 73,912,196,183.81/280,821.44
  6. Step 6: Final answer
    x = 263,199.98

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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.