Home / 398,904.90-550,448.37-245,918.58

Finding the Fourth Proportional to 398,904.90, 550,448.37 and 245,918.58

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Solution

The fourth proportional to 398,904.90, 550,448.37 and 245,918.58 is: 339,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,904.90 : 550,448.37 = 245,918.58 : x
  2. Step 2: Convert to fraction form
    398,904.90/550,448.37 = 245,918.58/x
  3. Step 3: Cross multiply
    398,904.90x = 550,448.37 × 245,918.58
  4. Step 4: Simplify right side
    398,904.90x = 135,365,481,513.72
  5. Step 5: Solve for x
    x = 135,365,481,513.72/398,904.90
  6. Step 6: Final answer
    x = 339,342.74

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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.