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Finding the Fourth Proportional to 275,166.90, 385,496.10 and 275,166.90

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Solution

The fourth proportional to 275,166.90, 385,496.10 and 275,166.90 is: 385,496.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,166.90 : 385,496.10 = 275,166.90 : x
  2. Step 2: Convert to fraction form
    275,166.90/385,496.10 = 275,166.90/x
  3. Step 3: Cross multiply
    275,166.90x = 385,496.10 × 275,166.90
  4. Step 4: Simplify right side
    275,166.90x = 106,075,766,799.09
  5. Step 5: Solve for x
    x = 106,075,766,799.09/275,166.90
  6. Step 6: Final answer
    x = 385,496.10

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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.