Home / 380,622.11-525,314.43-219,445.61

Finding the Fourth Proportional to 380,622.11, 525,314.43 and 219,445.61

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Solution

The fourth proportional to 380,622.11, 525,314.43 and 219,445.61 is: 302,867.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,622.11 : 525,314.43 = 219,445.61 : x
  2. Step 2: Convert to fraction form
    380,622.11/525,314.43 = 219,445.61/x
  3. Step 3: Cross multiply
    380,622.11x = 525,314.43 × 219,445.61
  4. Step 4: Simplify right side
    380,622.11x = 115,277,942,906.58
  5. Step 5: Solve for x
    x = 115,277,942,906.58/380,622.11
  6. Step 6: Final answer
    x = 302,867.18

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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.