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Finding the Fourth Proportional to 210,842.99, 290,958.33 and 115,350.47

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Solution

The fourth proportional to 210,842.99, 290,958.33 and 115,350.47 is: 159,180.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,842.99 : 290,958.33 = 115,350.47 : x
  2. Step 2: Convert to fraction form
    210,842.99/290,958.33 = 115,350.47/x
  3. Step 3: Cross multiply
    210,842.99x = 290,958.33 × 115,350.47
  4. Step 4: Simplify right side
    210,842.99x = 33,562,178,084.37
  5. Step 5: Solve for x
    x = 33,562,178,084.37/210,842.99
  6. Step 6: Final answer
    x = 159,180.91

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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.