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Finding the Fourth Proportional to 245,597.82, 338,901.03 and 138,165.54

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Solution

The fourth proportional to 245,597.82, 338,901.03 and 138,165.54 is: 190,654.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,597.82 : 338,901.03 = 138,165.54 : x
  2. Step 2: Convert to fraction form
    245,597.82/338,901.03 = 138,165.54/x
  3. Step 3: Cross multiply
    245,597.82x = 338,901.03 × 138,165.54
  4. Step 4: Simplify right side
    245,597.82x = 46,824,443,816.51
  5. Step 5: Solve for x
    x = 46,824,443,816.51/245,597.82
  6. Step 6: Final answer
    x = 190,654.97

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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.