Home / 380,911.50-525,658.35-211,171.02

Finding the Fourth Proportional to 380,911.50, 525,658.35 and 211,171.02

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Solution

The fourth proportional to 380,911.50, 525,658.35 and 211,171.02 is: 291,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,911.50 : 525,658.35 = 211,171.02 : x
  2. Step 2: Convert to fraction form
    380,911.50/525,658.35 = 211,171.02/x
  3. Step 3: Cross multiply
    380,911.50x = 525,658.35 × 211,171.02
  4. Step 4: Simplify right side
    380,911.50x = 111,003,809,941.02
  5. Step 5: Solve for x
    x = 111,003,809,941.02/380,911.50
  6. Step 6: Final answer
    x = 291,416.27

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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.