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Finding the Fourth Proportional to 276,145.68, 414,172.28 and 76,486.16

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Solution

The fourth proportional to 276,145.68, 414,172.28 and 76,486.16 is: 114,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,145.68 : 414,172.28 = 76,486.16 : x
  2. Step 2: Convert to fraction form
    276,145.68/414,172.28 = 76,486.16/x
  3. Step 3: Cross multiply
    276,145.68x = 414,172.28 × 76,486.16
  4. Step 4: Simplify right side
    276,145.68x = 31,678,447,275.64
  5. Step 5: Solve for x
    x = 31,678,447,275.64/276,145.68
  6. Step 6: Final answer
    x = 114,716.43

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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.