Home / 210,836.36-290,957.70-115,343.72

Finding the Fourth Proportional to 210,836.36, 290,957.70 and 115,343.72

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Solution

The fourth proportional to 210,836.36, 290,957.70 and 115,343.72 is: 159,176.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,836.36 : 290,957.70 = 115,343.72 : x
  2. Step 2: Convert to fraction form
    210,836.36/290,957.70 = 115,343.72/x
  3. Step 3: Cross multiply
    210,836.36x = 290,957.70 × 115,343.72
  4. Step 4: Simplify right side
    210,836.36x = 33,560,143,480.64
  5. Step 5: Solve for x
    x = 33,560,143,480.64/210,836.36
  6. Step 6: Final answer
    x = 159,176.26

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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.