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Finding the Fourth Proportional to 306,661.81, 459,966.36 and 186,687.62

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Solution

The fourth proportional to 306,661.81, 459,966.36 and 186,687.62 is: 280,015.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,661.81 : 459,966.36 = 186,687.62 : x
  2. Step 2: Convert to fraction form
    306,661.81/459,966.36 = 186,687.62/x
  3. Step 3: Cross multiply
    306,661.81x = 459,966.36 × 186,687.62
  4. Step 4: Simplify right side
    306,661.81x = 85,870,025,261.82
  5. Step 5: Solve for x
    x = 85,870,025,261.82/306,661.81
  6. Step 6: Final answer
    x = 280,015.39

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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.