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Finding the Fourth Proportional to 367,638.90, 515,394.30 and 367,638.90

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Solution

The fourth proportional to 367,638.90, 515,394.30 and 367,638.90 is: 515,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,638.90 : 515,394.30 = 367,638.90 : x
  2. Step 2: Convert to fraction form
    367,638.90/515,394.30 = 367,638.90/x
  3. Step 3: Cross multiply
    367,638.90x = 515,394.30 × 367,638.90
  4. Step 4: Simplify right side
    367,638.90x = 189,478,993,518.27
  5. Step 5: Solve for x
    x = 189,478,993,518.27/367,638.90
  6. Step 6: Final answer
    x = 515,394.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.