Home / 245,583.78-338,925.29-138,147.40

Finding the Fourth Proportional to 245,583.78, 338,925.29 and 138,147.40

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Solution

The fourth proportional to 245,583.78, 338,925.29 and 138,147.40 is: 190,654.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,583.78 : 338,925.29 = 138,147.40 : x
  2. Step 2: Convert to fraction form
    245,583.78/338,925.29 = 138,147.40/x
  3. Step 3: Cross multiply
    245,583.78x = 338,925.29 × 138,147.40
  4. Step 4: Simplify right side
    245,583.78x = 46,821,647,607.75
  5. Step 5: Solve for x
    x = 46,821,647,607.75/245,583.78
  6. Step 6: Final answer
    x = 190,654.48

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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.