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Finding the Fourth Proportional to 276,636.40, 414,954.60 and 136,668.40

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Solution

The fourth proportional to 276,636.40, 414,954.60 and 136,668.40 is: 205,002.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,636.40 : 414,954.60 = 136,668.40 : x
  2. Step 2: Convert to fraction form
    276,636.40/414,954.60 = 136,668.40/x
  3. Step 3: Cross multiply
    276,636.40x = 414,954.60 × 136,668.40
  4. Step 4: Simplify right side
    276,636.40x = 56,711,181,254.64
  5. Step 5: Solve for x
    x = 56,711,181,254.64/276,636.40
  6. Step 6: Final answer
    x = 205,002.60

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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.