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Finding the Fourth Proportional to 276,482.21, 414,722.94 and 86,959.22

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Solution

The fourth proportional to 276,482.21, 414,722.94 and 86,959.22 is: 130,438.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,482.21 : 414,722.94 = 86,959.22 : x
  2. Step 2: Convert to fraction form
    276,482.21/414,722.94 = 86,959.22/x
  3. Step 3: Cross multiply
    276,482.21x = 414,722.94 × 86,959.22
  4. Step 4: Simplify right side
    276,482.21x = 36,063,983,311.61
  5. Step 5: Solve for x
    x = 36,063,983,311.61/276,482.21
  6. Step 6: Final answer
    x = 130,438.71

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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.