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Finding the Fourth Proportional to 423,575.25, 635,221.93 and 170,790.45

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Solution

The fourth proportional to 423,575.25, 635,221.93 and 170,790.45 is: 256,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,575.25 : 635,221.93 = 170,790.45 : x
  2. Step 2: Convert to fraction form
    423,575.25/635,221.93 = 170,790.45/x
  3. Step 3: Cross multiply
    423,575.25x = 635,221.93 × 170,790.45
  4. Step 4: Simplify right side
    423,575.25x = 108,489,839,274.57
  5. Step 5: Solve for x
    x = 108,489,839,274.57/423,575.25
  6. Step 6: Final answer
    x = 256,128.84

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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.