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Finding the Fourth Proportional to 262,090.39, 393,135.59 and 84,623.54

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Solution

The fourth proportional to 262,090.39, 393,135.59 and 84,623.54 is: 126,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,090.39 : 393,135.59 = 84,623.54 : x
  2. Step 2: Convert to fraction form
    262,090.39/393,135.59 = 84,623.54/x
  3. Step 3: Cross multiply
    262,090.39x = 393,135.59 × 84,623.54
  4. Step 4: Simplify right side
    262,090.39x = 33,268,525,325.79
  5. Step 5: Solve for x
    x = 33,268,525,325.79/262,090.39
  6. Step 6: Final answer
    x = 126,935.31

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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.