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Finding the Fourth Proportional to 395,388.90, 545,636.97 and 214,102.26

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Solution

The fourth proportional to 395,388.90, 545,636.97 and 214,102.26 is: 295,461.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,388.90 : 545,636.97 = 214,102.26 : x
  2. Step 2: Convert to fraction form
    395,388.90/545,636.97 = 214,102.26/x
  3. Step 3: Cross multiply
    395,388.90x = 545,636.97 × 214,102.26
  4. Step 4: Simplify right side
    395,388.90x = 116,822,108,416.55
  5. Step 5: Solve for x
    x = 116,822,108,416.55/395,388.90
  6. Step 6: Final answer
    x = 295,461.27

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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.