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Finding the Fourth Proportional to 245,854.72, 339,289.97 and 136,958.93

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Solution

The fourth proportional to 245,854.72, 339,289.97 and 136,958.93 is: 189,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,854.72 : 339,289.97 = 136,958.93 : x
  2. Step 2: Convert to fraction form
    245,854.72/339,289.97 = 136,958.93/x
  3. Step 3: Cross multiply
    245,854.72x = 339,289.97 × 136,958.93
  4. Step 4: Simplify right side
    245,854.72x = 46,468,789,896.88
  5. Step 5: Solve for x
    x = 46,468,789,896.88/245,854.72
  6. Step 6: Final answer
    x = 189,009.14

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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.