Home / 380,729.40-525,538.25-219,648.66

Finding the Fourth Proportional to 380,729.40, 525,538.25 and 219,648.66

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Solution

The fourth proportional to 380,729.40, 525,538.25 and 219,648.66 is: 303,191.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,729.40 : 525,538.25 = 219,648.66 : x
  2. Step 2: Convert to fraction form
    380,729.40/525,538.25 = 219,648.66/x
  3. Step 3: Cross multiply
    380,729.40x = 525,538.25 × 219,648.66
  4. Step 4: Simplify right side
    380,729.40x = 115,433,772,391.25
  5. Step 5: Solve for x
    x = 115,433,772,391.25/380,729.40
  6. Step 6: Final answer
    x = 303,191.12

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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.