Home / 427,623.17-641,555.85-214,133.36

Finding the Fourth Proportional to 427,623.17, 641,555.85 and 214,133.36

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Solution

The fourth proportional to 427,623.17, 641,555.85 and 214,133.36 is: 321,260.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,623.17 : 641,555.85 = 214,133.36 : x
  2. Step 2: Convert to fraction form
    427,623.17/641,555.85 = 214,133.36/x
  3. Step 3: Cross multiply
    427,623.17x = 641,555.85 × 214,133.36
  4. Step 4: Simplify right side
    427,623.17x = 137,378,507,683.60
  5. Step 5: Solve for x
    x = 137,378,507,683.60/427,623.17
  6. Step 6: Final answer
    x = 321,260.67

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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.