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Finding the Fourth Proportional to 343,860.40, 515,790.60 and 325,489.60

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Solution

The fourth proportional to 343,860.40, 515,790.60 and 325,489.60 is: 488,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,860.40 : 515,790.60 = 325,489.60 : x
  2. Step 2: Convert to fraction form
    343,860.40/515,790.60 = 325,489.60/x
  3. Step 3: Cross multiply
    343,860.40x = 515,790.60 × 325,489.60
  4. Step 4: Simplify right side
    343,860.40x = 167,884,476,077.76
  5. Step 5: Solve for x
    x = 167,884,476,077.76/343,860.40
  6. Step 6: Final answer
    x = 488,234.40

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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.