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Finding the Fourth Proportional to 210,495.44, 290,486.28 and 115,003.28

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Solution

The fourth proportional to 210,495.44, 290,486.28 and 115,003.28 is: 158,705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,495.44 : 290,486.28 = 115,003.28 : x
  2. Step 2: Convert to fraction form
    210,495.44/290,486.28 = 115,003.28/x
  3. Step 3: Cross multiply
    210,495.44x = 290,486.28 × 115,003.28
  4. Step 4: Simplify right side
    210,495.44x = 33,406,874,995.00
  5. Step 5: Solve for x
    x = 33,406,874,995.00/210,495.44
  6. Step 6: Final answer
    x = 158,705.93

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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.