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Finding the Fourth Proportional to 248,397.63, 342,788.79 and 135,220.38

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Solution

The fourth proportional to 248,397.63, 342,788.79 and 135,220.38 is: 186,604.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,397.63 : 342,788.79 = 135,220.38 : x
  2. Step 2: Convert to fraction form
    248,397.63/342,788.79 = 135,220.38/x
  3. Step 3: Cross multiply
    248,397.63x = 342,788.79 × 135,220.38
  4. Step 4: Simplify right side
    248,397.63x = 46,352,030,443.54
  5. Step 5: Solve for x
    x = 46,352,030,443.54/248,397.63
  6. Step 6: Final answer
    x = 186,604.16

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1.5x scale

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.