Home / 210,782.21-290,886.38-115,288.91

Finding the Fourth Proportional to 210,782.21, 290,886.38 and 115,288.91

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Solution

The fourth proportional to 210,782.21, 290,886.38 and 115,288.91 is: 159,102.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,782.21 : 290,886.38 = 115,288.91 : x
  2. Step 2: Convert to fraction form
    210,782.21/290,886.38 = 115,288.91/x
  3. Step 3: Cross multiply
    210,782.21x = 290,886.38 × 115,288.91
  4. Step 4: Simplify right side
    210,782.21x = 33,535,972,517.84
  5. Step 5: Solve for x
    x = 33,535,972,517.84/210,782.21
  6. Step 6: Final answer
    x = 159,102.48

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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.