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Finding the Fourth Proportional to 275,134.80, 384,401.40 and 275,134.80

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Solution

The fourth proportional to 275,134.80, 384,401.40 and 275,134.80 is: 384,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,134.80 : 384,401.40 = 275,134.80 : x
  2. Step 2: Convert to fraction form
    275,134.80/384,401.40 = 275,134.80/x
  3. Step 3: Cross multiply
    275,134.80x = 384,401.40 × 275,134.80
  4. Step 4: Simplify right side
    275,134.80x = 105,762,202,308.72
  5. Step 5: Solve for x
    x = 105,762,202,308.72/275,134.80
  6. Step 6: Final answer
    x = 384,401.40

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1.5x scale

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.