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Finding the Fourth Proportional to 395,379.19, 545,622.50 and 214,090.56

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Solution

The fourth proportional to 395,379.19, 545,622.50 and 214,090.56 is: 295,444.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,379.19 : 545,622.50 = 214,090.56 : x
  2. Step 2: Convert to fraction form
    395,379.19/545,622.50 = 214,090.56/x
  3. Step 3: Cross multiply
    395,379.19x = 545,622.50 × 214,090.56
  4. Step 4: Simplify right side
    395,379.19x = 116,812,624,054.33
  5. Step 5: Solve for x
    x = 116,812,624,054.33/395,379.19
  6. Step 6: Final answer
    x = 295,444.55

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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.