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Finding the Fourth Proportional to 248,611.40, 372,917.10 and 108,643.40

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Solution

The fourth proportional to 248,611.40, 372,917.10 and 108,643.40 is: 162,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,611.40 : 372,917.10 = 108,643.40 : x
  2. Step 2: Convert to fraction form
    248,611.40/372,917.10 = 108,643.40/x
  3. Step 3: Cross multiply
    248,611.40x = 372,917.10 × 108,643.40
  4. Step 4: Simplify right side
    248,611.40x = 40,514,981,662.14
  5. Step 5: Solve for x
    x = 40,514,981,662.14/248,611.40
  6. Step 6: Final answer
    x = 162,965.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.