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Finding the Fourth Proportional to 275,140.80, 384,409.80 and 275,140.80

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Solution

The fourth proportional to 275,140.80, 384,409.80 and 275,140.80 is: 384,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,140.80 : 384,409.80 = 275,140.80 : x
  2. Step 2: Convert to fraction form
    275,140.80/384,409.80 = 275,140.80/x
  3. Step 3: Cross multiply
    275,140.80x = 384,409.80 × 275,140.80
  4. Step 4: Simplify right side
    275,140.80x = 105,766,819,899.84
  5. Step 5: Solve for x
    x = 105,766,819,899.84/275,140.80
  6. Step 6: Final answer
    x = 384,409.80

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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.