Home / 210,538.86-290,540.12-115,043.36

Finding the Fourth Proportional to 210,538.86, 290,540.12 and 115,043.36

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Solution

The fourth proportional to 210,538.86, 290,540.12 and 115,043.36 is: 158,757.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,538.86 : 290,540.12 = 115,043.36 : x
  2. Step 2: Convert to fraction form
    210,538.86/290,540.12 = 115,043.36/x
  3. Step 3: Cross multiply
    210,538.86x = 290,540.12 × 115,043.36
  4. Step 4: Simplify right side
    210,538.86x = 33,424,711,619.60
  5. Step 5: Solve for x
    x = 33,424,711,619.60/210,538.86
  6. Step 6: Final answer
    x = 158,757.92

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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.