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Finding the Fourth Proportional to 380,703.88, 570,759.43 and 188,445.66

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Solution

The fourth proportional to 380,703.88, 570,759.43 and 188,445.66 is: 282,521.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,703.88 : 570,759.43 = 188,445.66 : x
  2. Step 2: Convert to fraction form
    380,703.88/570,759.43 = 188,445.66/x
  3. Step 3: Cross multiply
    380,703.88x = 570,759.43 × 188,445.66
  4. Step 4: Simplify right side
    380,703.88x = 107,557,138,439.97
  5. Step 5: Solve for x
    x = 107,557,138,439.97/380,703.88
  6. Step 6: Final answer
    x = 282,521.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.