Home / 421,131.04-581,109.92-239,843.36

Finding the Fourth Proportional to 421,131.04, 581,109.92 and 239,843.36

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Solution

The fourth proportional to 421,131.04, 581,109.92 and 239,843.36 is: 330,954.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,131.04 : 581,109.92 = 239,843.36 : x
  2. Step 2: Convert to fraction form
    421,131.04/581,109.92 = 239,843.36/x
  3. Step 3: Cross multiply
    421,131.04x = 581,109.92 × 239,843.36
  4. Step 4: Simplify right side
    421,131.04x = 139,375,355,742.13
  5. Step 5: Solve for x
    x = 139,375,355,742.13/421,131.04
  6. Step 6: Final answer
    x = 330,954.84

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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.