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Finding the Fourth Proportional to 395,311.76, 545,526.22 and 214,018.88

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Solution

The fourth proportional to 395,311.76, 545,526.22 and 214,018.88 is: 295,343.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,311.76 : 545,526.22 = 214,018.88 : x
  2. Step 2: Convert to fraction form
    395,311.76/545,526.22 = 214,018.88/x
  3. Step 3: Cross multiply
    395,311.76x = 545,526.22 × 214,018.88
  4. Step 4: Simplify right side
    395,311.76x = 116,752,910,615.03
  5. Step 5: Solve for x
    x = 116,752,910,615.03/395,311.76
  6. Step 6: Final answer
    x = 295,343.88

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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.