Home / 210,861.36-290,995.62-115,365.90

Finding the Fourth Proportional to 210,861.36, 290,995.62 and 115,365.90

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Solution

The fourth proportional to 210,861.36, 290,995.62 and 115,365.90 is: 159,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,861.36 : 290,995.62 = 115,365.90 : x
  2. Step 2: Convert to fraction form
    210,861.36/290,995.62 = 115,365.90/x
  3. Step 3: Cross multiply
    210,861.36x = 290,995.62 × 115,365.90
  4. Step 4: Simplify right side
    210,861.36x = 33,570,971,597.36
  5. Step 5: Solve for x
    x = 33,570,971,597.36/210,861.36
  6. Step 6: Final answer
    x = 159,208.74

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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.