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Finding the Fourth Proportional to 260,650.66, 389,358.79 and 189,004.54

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Solution

The fourth proportional to 260,650.66, 389,358.79 and 189,004.54 is: 282,334.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,650.66 : 389,358.79 = 189,004.54 : x
  2. Step 2: Convert to fraction form
    260,650.66/389,358.79 = 189,004.54/x
  3. Step 3: Cross multiply
    260,650.66x = 389,358.79 × 189,004.54
  4. Step 4: Simplify right side
    260,650.66x = 73,590,578,998.91
  5. Step 5: Solve for x
    x = 73,590,578,998.91/260,650.66
  6. Step 6: Final answer
    x = 282,334.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.