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Finding the Fourth Proportional to 218,335.39, 301,290.17 and 122,836.39

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Solution

The fourth proportional to 218,335.39, 301,290.17 and 122,836.39 is: 169,507.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,335.39 : 301,290.17 = 122,836.39 : x
  2. Step 2: Convert to fraction form
    218,335.39/301,290.17 = 122,836.39/x
  3. Step 3: Cross multiply
    218,335.39x = 301,290.17 × 122,836.39
  4. Step 4: Simplify right side
    218,335.39x = 37,009,395,457.88
  5. Step 5: Solve for x
    x = 37,009,395,457.88/218,335.39
  6. Step 6: Final answer
    x = 169,507.09

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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.