Home / 407,090.36-561,771.38-245,917.31

Finding the Fourth Proportional to 407,090.36, 561,771.38 and 245,917.31

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Solution

The fourth proportional to 407,090.36, 561,771.38 and 245,917.31 is: 339,357.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,090.36 : 561,771.38 = 245,917.31 : x
  2. Step 2: Convert to fraction form
    407,090.36/561,771.38 = 245,917.31/x
  3. Step 3: Cross multiply
    407,090.36x = 561,771.38 × 245,917.31
  4. Step 4: Simplify right side
    407,090.36x = 138,149,304,410.52
  5. Step 5: Solve for x
    x = 138,149,304,410.52/407,090.36
  6. Step 6: Final answer
    x = 339,357.84

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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.