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Finding the Fourth Proportional to 248,432.64, 342,843.20 and 135,261.60

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Solution

The fourth proportional to 248,432.64, 342,843.20 and 135,261.60 is: 186,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,432.64 : 342,843.20 = 135,261.60 : x
  2. Step 2: Convert to fraction form
    248,432.64/342,843.20 = 135,261.60/x
  3. Step 3: Cross multiply
    248,432.64x = 342,843.20 × 135,261.60
  4. Step 4: Simplify right side
    248,432.64x = 46,373,519,781.12
  5. Step 5: Solve for x
    x = 46,373,519,781.12/248,432.64
  6. Step 6: Final answer
    x = 186,664.36

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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.