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Finding the Fourth Proportional to 279,481.77, 385,560.23 and 188,808.57

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Solution

The fourth proportional to 279,481.77, 385,560.23 and 188,808.57 is: 260,471.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,481.77 : 385,560.23 = 188,808.57 : x
  2. Step 2: Convert to fraction form
    279,481.77/385,560.23 = 188,808.57/x
  3. Step 3: Cross multiply
    279,481.77x = 385,560.23 × 188,808.57
  4. Step 4: Simplify right side
    279,481.77x = 72,797,075,675.17
  5. Step 5: Solve for x
    x = 72,797,075,675.17/279,481.77
  6. Step 6: Final answer
    x = 260,471.64

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1.5x scale

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.