Home / 387,979.35-581,993.63-121,750.37

Finding the Fourth Proportional to 387,979.35, 581,993.63 and 121,750.37

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Solution

The fourth proportional to 387,979.35, 581,993.63 and 121,750.37 is: 182,633.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,979.35 : 581,993.63 = 121,750.37 : x
  2. Step 2: Convert to fraction form
    387,979.35/581,993.63 = 121,750.37/x
  3. Step 3: Cross multiply
    387,979.35x = 581,993.63 × 121,750.37
  4. Step 4: Simplify right side
    387,979.35x = 70,857,939,181.39
  5. Step 5: Solve for x
    x = 70,857,939,181.39/387,979.35
  6. Step 6: Final answer
    x = 182,633.27

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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.