Home / 380,982.83-525,757.05-211,216.96

Finding the Fourth Proportional to 380,982.83, 525,757.05 and 211,216.96

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Solution

The fourth proportional to 380,982.83, 525,757.05 and 211,216.96 is: 291,479.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,982.83 : 525,757.05 = 211,216.96 : x
  2. Step 2: Convert to fraction form
    380,982.83/525,757.05 = 211,216.96/x
  3. Step 3: Cross multiply
    380,982.83x = 525,757.05 × 211,216.96
  4. Step 4: Simplify right side
    380,982.83x = 111,048,804,485.18
  5. Step 5: Solve for x
    x = 111,048,804,485.18/380,982.83
  6. Step 6: Final answer
    x = 291,479.81

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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.