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Finding the Fourth Proportional to 343,893.74, 515,986.42 and 166,532.90

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Solution

The fourth proportional to 343,893.74, 515,986.42 and 166,532.90 is: 249,869.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,893.74 : 515,986.42 = 166,532.90 : x
  2. Step 2: Convert to fraction form
    343,893.74/515,986.42 = 166,532.90/x
  3. Step 3: Cross multiply
    343,893.74x = 515,986.42 × 166,532.90
  4. Step 4: Simplify right side
    343,893.74x = 85,928,714,883.22
  5. Step 5: Solve for x
    x = 85,928,714,883.22/343,893.74
  6. Step 6: Final answer
    x = 249,869.96

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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.