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Finding the Fourth Proportional to 153,255.29, 211,486.99 and 84,338.33

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Solution

The fourth proportional to 153,255.29, 211,486.99 and 84,338.33 is: 116,383.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,255.29 : 211,486.99 = 84,338.33 : x
  2. Step 2: Convert to fraction form
    153,255.29/211,486.99 = 84,338.33/x
  3. Step 3: Cross multiply
    153,255.29x = 211,486.99 × 84,338.33
  4. Step 4: Simplify right side
    153,255.29x = 17,836,458,285.05
  5. Step 5: Solve for x
    x = 17,836,458,285.05/153,255.29
  6. Step 6: Final answer
    x = 116,383.97

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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.