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Finding the Fourth Proportional to 359,238.90, 538,858.26 and 122,581.56

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Solution

The fourth proportional to 359,238.90, 538,858.26 and 122,581.56 is: 183,872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,238.90 : 538,858.26 = 122,581.56 : x
  2. Step 2: Convert to fraction form
    359,238.90/538,858.26 = 122,581.56/x
  3. Step 3: Cross multiply
    359,238.90x = 538,858.26 × 122,581.56
  4. Step 4: Simplify right side
    359,238.90x = 66,054,086,129.69
  5. Step 5: Solve for x
    x = 66,054,086,129.69/359,238.90
  6. Step 6: Final answer
    x = 183,872.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.