Home / 638,195.56-957,407.20-211,756.96

Finding the Fourth Proportional to 638,195.56, 957,407.20 and 211,756.96

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Solution

The fourth proportional to 638,195.56, 957,407.20 and 211,756.96 is: 317,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,195.56 : 957,407.20 = 211,756.96 : x
  2. Step 2: Convert to fraction form
    638,195.56/957,407.20 = 211,756.96/x
  3. Step 3: Cross multiply
    638,195.56x = 957,407.20 × 211,756.96
  4. Step 4: Simplify right side
    638,195.56x = 202,737,638,154.11
  5. Step 5: Solve for x
    x = 202,737,638,154.11/638,195.56
  6. Step 6: Final answer
    x = 317,673.22

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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.