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Finding the Fourth Proportional to 343,530.40, 515,149.80 and 166,091.80

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Solution

The fourth proportional to 343,530.40, 515,149.80 and 166,091.80 is: 249,067.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,530.40 : 515,149.80 = 166,091.80 : x
  2. Step 2: Convert to fraction form
    343,530.40/515,149.80 = 166,091.80/x
  3. Step 3: Cross multiply
    343,530.40x = 515,149.80 × 166,091.80
  4. Step 4: Simplify right side
    343,530.40x = 85,562,157,551.64
  5. Step 5: Solve for x
    x = 85,562,157,551.64/343,530.40
  6. Step 6: Final answer
    x = 249,067.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.