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Finding the Fourth Proportional to 395,450.40, 545,714.81 and 214,160.86

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Solution

The fourth proportional to 395,450.40, 545,714.81 and 214,160.86 is: 295,538.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,450.40 : 545,714.81 = 214,160.86 : x
  2. Step 2: Convert to fraction form
    395,450.40/545,714.81 = 214,160.86/x
  3. Step 3: Cross multiply
    395,450.40x = 545,714.81 × 214,160.86
  4. Step 4: Simplify right side
    395,450.40x = 116,870,753,024.34
  5. Step 5: Solve for x
    x = 116,870,753,024.34/395,450.40
  6. Step 6: Final answer
    x = 295,538.34

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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.