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Finding the Fourth Proportional to 344,556.60, 515,960.10 and 328,810.20

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Solution

The fourth proportional to 344,556.60, 515,960.10 and 328,810.20 is: 492,380.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,556.60 : 515,960.10 = 328,810.20 : x
  2. Step 2: Convert to fraction form
    344,556.60/515,960.10 = 328,810.20/x
  3. Step 3: Cross multiply
    344,556.60x = 515,960.10 × 328,810.20
  4. Step 4: Simplify right side
    344,556.60x = 169,652,943,673.02
  5. Step 5: Solve for x
    x = 169,652,943,673.02/344,556.60
  6. Step 6: Final answer
    x = 492,380.48

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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.