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Finding the Fourth Proportional to 481,724.76, 664,726.50 and 266,811

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Solution

The fourth proportional to 481,724.76, 664,726.50 and 266,811 is: 368,169.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,724.76 : 664,726.50 = 266,811 : x
  2. Step 2: Convert to fraction form
    481,724.76/664,726.50 = 266,811/x
  3. Step 3: Cross multiply
    481,724.76x = 664,726.50 × 266,811
  4. Step 4: Simplify right side
    481,724.76x = 177,356,342,191.50
  5. Step 5: Solve for x
    x = 177,356,342,191.50/481,724.76
  6. Step 6: Final answer
    x = 368,169.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.