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Finding the Fourth Proportional to 245,614.56, 338,923.96 and 138,182.28

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Solution

The fourth proportional to 245,614.56, 338,923.96 and 138,182.28 is: 190,677.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,614.56 : 338,923.96 = 138,182.28 : x
  2. Step 2: Convert to fraction form
    245,614.56/338,923.96 = 138,182.28/x
  3. Step 3: Cross multiply
    245,614.56x = 338,923.96 × 138,182.28
  4. Step 4: Simplify right side
    245,614.56x = 46,833,285,539.43
  5. Step 5: Solve for x
    x = 46,833,285,539.43/245,614.56
  6. Step 6: Final answer
    x = 190,677.97

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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.