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Finding the Fourth Proportional to 276,020.40, 414,030.60 and 259,690.80

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Solution

The fourth proportional to 276,020.40, 414,030.60 and 259,690.80 is: 389,536.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,020.40 : 414,030.60 = 259,690.80 : x
  2. Step 2: Convert to fraction form
    276,020.40/414,030.60 = 259,690.80/x
  3. Step 3: Cross multiply
    276,020.40x = 414,030.60 × 259,690.80
  4. Step 4: Simplify right side
    276,020.40x = 107,519,937,738.48
  5. Step 5: Solve for x
    x = 107,519,937,738.48/276,020.40
  6. Step 6: Final answer
    x = 389,536.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.