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Finding the Fourth Proportional to 335,408.28, 503,112.42 and 86,090.28

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Solution

The fourth proportional to 335,408.28, 503,112.42 and 86,090.28 is: 129,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,408.28 : 503,112.42 = 86,090.28 : x
  2. Step 2: Convert to fraction form
    335,408.28/503,112.42 = 86,090.28/x
  3. Step 3: Cross multiply
    335,408.28x = 503,112.42 × 86,090.28
  4. Step 4: Simplify right side
    335,408.28x = 43,313,089,109.28
  5. Step 5: Solve for x
    x = 43,313,089,109.28/335,408.28
  6. Step 6: Final answer
    x = 129,135.42

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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.