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Finding the Fourth Proportional to 248,115.38, 342,401.85 and 134,940.56

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Solution

The fourth proportional to 248,115.38, 342,401.85 and 134,940.56 is: 186,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,115.38 : 342,401.85 = 134,940.56 : x
  2. Step 2: Convert to fraction form
    248,115.38/342,401.85 = 134,940.56/x
  3. Step 3: Cross multiply
    248,115.38x = 342,401.85 × 134,940.56
  4. Step 4: Simplify right side
    248,115.38x = 46,203,895,672.03
  5. Step 5: Solve for x
    x = 46,203,895,672.03/248,115.38
  6. Step 6: Final answer
    x = 186,219.40

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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.