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Finding the Fourth Proportional to 236,244.21, 354,386.37 and 86,448.42

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Solution

The fourth proportional to 236,244.21, 354,386.37 and 86,448.42 is: 129,679.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,244.21 : 354,386.37 = 86,448.42 : x
  2. Step 2: Convert to fraction form
    236,244.21/354,386.37 = 86,448.42/x
  3. Step 3: Cross multiply
    236,244.21x = 354,386.37 × 86,448.42
  4. Step 4: Simplify right side
    236,244.21x = 30,636,141,756.04
  5. Step 5: Solve for x
    x = 30,636,141,756.04/236,244.21
  6. Step 6: Final answer
    x = 129,679.97

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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.