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Finding the Fourth Proportional to 395,515.75, 545,845.29 and 223,465.34

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Solution

The fourth proportional to 395,515.75, 545,845.29 and 223,465.34 is: 308,401.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,515.75 : 545,845.29 = 223,465.34 : x
  2. Step 2: Convert to fraction form
    395,515.75/545,845.29 = 223,465.34/x
  3. Step 3: Cross multiply
    395,515.75x = 545,845.29 × 223,465.34
  4. Step 4: Simplify right side
    395,515.75x = 121,977,503,317.25
  5. Step 5: Solve for x
    x = 121,977,503,317.25/395,515.75
  6. Step 6: Final answer
    x = 308,401.13

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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.