Home / 380,815.50-525,525.39-211,060.56

Finding the Fourth Proportional to 380,815.50, 525,525.39 and 211,060.56

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Solution

The fourth proportional to 380,815.50, 525,525.39 and 211,060.56 is: 291,263.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,815.50 : 525,525.39 = 211,060.56 : x
  2. Step 2: Convert to fraction form
    380,815.50/525,525.39 = 211,060.56/x
  3. Step 3: Cross multiply
    380,815.50x = 525,525.39 × 211,060.56
  4. Step 4: Simplify right side
    380,815.50x = 110,917,683,107.62
  5. Step 5: Solve for x
    x = 110,917,683,107.62/380,815.50
  6. Step 6: Final answer
    x = 291,263.57

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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.