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Finding the Fourth Proportional to 245,540.64, 338,842.62 and 138,110.64

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Solution

The fourth proportional to 245,540.64, 338,842.62 and 138,110.64 is: 190,590.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,540.64 : 338,842.62 = 138,110.64 : x
  2. Step 2: Convert to fraction form
    245,540.64/338,842.62 = 138,110.64/x
  3. Step 3: Cross multiply
    245,540.64x = 338,842.62 × 138,110.64
  4. Step 4: Simplify right side
    245,540.64x = 46,797,772,307.37
  5. Step 5: Solve for x
    x = 46,797,772,307.37/245,540.64
  6. Step 6: Final answer
    x = 190,590.74

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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.