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Finding the Fourth Proportional to 395,296.68, 545,505.60 and 214,003.96

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Solution

The fourth proportional to 395,296.68, 545,505.60 and 214,003.96 is: 295,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,296.68 : 545,505.60 = 214,003.96 : x
  2. Step 2: Convert to fraction form
    395,296.68/545,505.60 = 214,003.96/x
  3. Step 3: Cross multiply
    395,296.68x = 545,505.60 × 214,003.96
  4. Step 4: Simplify right side
    395,296.68x = 116,740,358,602.18
  5. Step 5: Solve for x
    x = 116,740,358,602.18/395,296.68
  6. Step 6: Final answer
    x = 295,323.40

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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.