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Finding the Fourth Proportional to 276,426.40, 414,639.60 and 136,458.40

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Solution

The fourth proportional to 276,426.40, 414,639.60 and 136,458.40 is: 204,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,426.40 : 414,639.60 = 136,458.40 : x
  2. Step 2: Convert to fraction form
    276,426.40/414,639.60 = 136,458.40/x
  3. Step 3: Cross multiply
    276,426.40x = 414,639.60 × 136,458.40
  4. Step 4: Simplify right side
    276,426.40x = 56,581,056,392.64
  5. Step 5: Solve for x
    x = 56,581,056,392.64/276,426.40
  6. Step 6: Final answer
    x = 204,687.60

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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.