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Finding the Fourth Proportional to 276,039.60, 414,059.40 and 142,960.65

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Solution

The fourth proportional to 276,039.60, 414,059.40 and 142,960.65 is: 214,440.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,039.60 : 414,059.40 = 142,960.65 : x
  2. Step 2: Convert to fraction form
    276,039.60/414,059.40 = 142,960.65/x
  3. Step 3: Cross multiply
    276,039.60x = 414,059.40 × 142,960.65
  4. Step 4: Simplify right side
    276,039.60x = 59,194,200,962.61
  5. Step 5: Solve for x
    x = 59,194,200,962.61/276,039.60
  6. Step 6: Final answer
    x = 214,440.98

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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.