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Finding the Fourth Proportional to 380,795.63, 525,550.41 and 219,647.16

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Solution

The fourth proportional to 380,795.63, 525,550.41 and 219,647.16 is: 303,143.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,795.63 : 525,550.41 = 219,647.16 : x
  2. Step 2: Convert to fraction form
    380,795.63/525,550.41 = 219,647.16/x
  3. Step 3: Cross multiply
    380,795.63x = 525,550.41 × 219,647.16
  4. Step 4: Simplify right side
    380,795.63x = 115,435,654,993.34
  5. Step 5: Solve for x
    x = 115,435,654,993.34/380,795.63
  6. Step 6: Final answer
    x = 303,143.33

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1.5x scale

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.