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Finding the Fourth Proportional to 395,368.88, 545,609.34 and 214,080.93

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Solution

The fourth proportional to 395,368.88, 545,609.34 and 214,080.93 is: 295,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,368.88 : 545,609.34 = 214,080.93 : x
  2. Step 2: Convert to fraction form
    395,368.88/545,609.34 = 214,080.93/x
  3. Step 3: Cross multiply
    395,368.88x = 545,609.34 × 214,080.93
  4. Step 4: Simplify right side
    395,368.88x = 116,804,554,923.89
  5. Step 5: Solve for x
    x = 116,804,554,923.89/395,368.88
  6. Step 6: Final answer
    x = 295,431.84

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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.