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Finding the Fourth Proportional to 266,615.55, 399,480.44 and 187,563.69

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Solution

The fourth proportional to 266,615.55, 399,480.44 and 187,563.69 is: 281,033.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,615.55 : 399,480.44 = 187,563.69 : x
  2. Step 2: Convert to fraction form
    266,615.55/399,480.44 = 187,563.69/x
  3. Step 3: Cross multiply
    266,615.55x = 399,480.44 × 187,563.69
  4. Step 4: Simplify right side
    266,615.55x = 74,928,024,471.41
  5. Step 5: Solve for x
    x = 74,928,024,471.41/266,615.55
  6. Step 6: Final answer
    x = 281,033.96

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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.