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Finding the Fourth Proportional to 248,853.64, 343,425.54 and 135,678.28

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Solution

The fourth proportional to 248,853.64, 343,425.54 and 135,678.28 is: 187,240.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,853.64 : 343,425.54 = 135,678.28 : x
  2. Step 2: Convert to fraction form
    248,853.64/343,425.54 = 135,678.28/x
  3. Step 3: Cross multiply
    248,853.64x = 343,425.54 × 135,678.28
  4. Step 4: Simplify right side
    248,853.64x = 46,595,386,575.27
  5. Step 5: Solve for x
    x = 46,595,386,575.27/248,853.64
  6. Step 6: Final answer
    x = 187,240.12

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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.