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Finding the Fourth Proportional to 380,404.22, 525,127.43 and 251,420.43

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Solution

The fourth proportional to 380,404.22, 525,127.43 and 251,420.43 is: 347,072.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,404.22 : 525,127.43 = 251,420.43 : x
  2. Step 2: Convert to fraction form
    380,404.22/525,127.43 = 251,420.43/x
  3. Step 3: Cross multiply
    380,404.22x = 525,127.43 × 251,420.43
  4. Step 4: Simplify right side
    380,404.22x = 132,027,764,255.40
  5. Step 5: Solve for x
    x = 132,027,764,255.40/380,404.22
  6. Step 6: Final answer
    x = 347,072.29

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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.