Home / 210,579.69-290,600-115,086.36

Finding the Fourth Proportional to 210,579.69, 290,600 and 115,086.36

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Solution

The fourth proportional to 210,579.69, 290,600 and 115,086.36 is: 158,819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,579.69 : 290,600 = 115,086.36 : x
  2. Step 2: Convert to fraction form
    210,579.69/290,600 = 115,086.36/x
  3. Step 3: Cross multiply
    210,579.69x = 290,600 × 115,086.36
  4. Step 4: Simplify right side
    210,579.69x = 33,444,096,216
  5. Step 5: Solve for x
    x = 33,444,096,216/210,579.69
  6. Step 6: Final answer
    x = 158,819.19

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1.5x scale

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.