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Finding the Fourth Proportional to 380,735.78, 525,415.21 and 227,780.44

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Solution

The fourth proportional to 380,735.78, 525,415.21 and 227,780.44 is: 314,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,735.78 : 525,415.21 = 227,780.44 : x
  2. Step 2: Convert to fraction form
    380,735.78/525,415.21 = 227,780.44/x
  3. Step 3: Cross multiply
    380,735.78x = 525,415.21 × 227,780.44
  4. Step 4: Simplify right side
    380,735.78x = 119,679,305,833.50
  5. Step 5: Solve for x
    x = 119,679,305,833.50/380,735.78
  6. Step 6: Final answer
    x = 314,336.91

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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.