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Finding the Fourth Proportional to 248,420, 342,820.41 and 135,243.56

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Solution

The fourth proportional to 248,420, 342,820.41 and 135,243.56 is: 186,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,420 : 342,820.41 = 135,243.56 : x
  2. Step 2: Convert to fraction form
    248,420/342,820.41 = 135,243.56/x
  3. Step 3: Cross multiply
    248,420x = 342,820.41 × 135,243.56
  4. Step 4: Simplify right side
    248,420x = 46,364,252,689.06
  5. Step 5: Solve for x
    x = 46,364,252,689.06/248,420
  6. Step 6: Final answer
    x = 186,636.55

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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.