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Finding the Fourth Proportional to 248,081.40, 342,348.30 and 134,907

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Solution

The fourth proportional to 248,081.40, 342,348.30 and 134,907 is: 186,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,081.40 : 342,348.30 = 134,907 : x
  2. Step 2: Convert to fraction form
    248,081.40/342,348.30 = 134,907/x
  3. Step 3: Cross multiply
    248,081.40x = 342,348.30 × 134,907
  4. Step 4: Simplify right side
    248,081.40x = 46,185,182,108.10
  5. Step 5: Solve for x
    x = 46,185,182,108.10/248,081.40
  6. Step 6: Final answer
    x = 186,169.47

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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.