Home / 217,638.20-326,512.38-105,372.20

Finding the Fourth Proportional to 217,638.20, 326,512.38 and 105,372.20

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Solution

The fourth proportional to 217,638.20, 326,512.38 and 105,372.20 is: 158,084.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,638.20 : 326,512.38 = 105,372.20 : x
  2. Step 2: Convert to fraction form
    217,638.20/326,512.38 = 105,372.20/x
  3. Step 3: Cross multiply
    217,638.20x = 326,512.38 × 105,372.20
  4. Step 4: Simplify right side
    217,638.20x = 34,405,327,807.84
  5. Step 5: Solve for x
    x = 34,405,327,807.84/217,638.20
  6. Step 6: Final answer
    x = 158,084.97

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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.