Home / 380,720.43-525,394.81-208,611.05

Finding the Fourth Proportional to 380,720.43, 525,394.81 and 208,611.05

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Solution

The fourth proportional to 380,720.43, 525,394.81 and 208,611.05 is: 287,883.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,720.43 : 525,394.81 = 208,611.05 : x
  2. Step 2: Convert to fraction form
    380,720.43/525,394.81 = 208,611.05/x
  3. Step 3: Cross multiply
    380,720.43x = 525,394.81 × 208,611.05
  4. Step 4: Simplify right side
    380,720.43x = 109,603,160,351.68
  5. Step 5: Solve for x
    x = 109,603,160,351.68/380,720.43
  6. Step 6: Final answer
    x = 287,883.58

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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.