Home / 320,987.12-442,918.78-177,743.48

Finding the Fourth Proportional to 320,987.12, 442,918.78 and 177,743.48

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Solution

The fourth proportional to 320,987.12, 442,918.78 and 177,743.48 is: 245,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,987.12 : 442,918.78 = 177,743.48 : x
  2. Step 2: Convert to fraction form
    320,987.12/442,918.78 = 177,743.48/x
  3. Step 3: Cross multiply
    320,987.12x = 442,918.78 × 177,743.48
  4. Step 4: Simplify right side
    320,987.12x = 78,725,922,655.60
  5. Step 5: Solve for x
    x = 78,725,922,655.60/320,987.12
  6. Step 6: Final answer
    x = 245,261.94

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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.