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Finding the Fourth Proportional to 266,571.76, 399,513.19 and 199,485.54

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Solution

The fourth proportional to 266,571.76, 399,513.19 and 199,485.54 is: 298,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,571.76 : 399,513.19 = 199,485.54 : x
  2. Step 2: Convert to fraction form
    266,571.76/399,513.19 = 199,485.54/x
  3. Step 3: Cross multiply
    266,571.76x = 399,513.19 × 199,485.54
  4. Step 4: Simplify right side
    266,571.76x = 79,697,104,444.27
  5. Step 5: Solve for x
    x = 79,697,104,444.27/266,571.76
  6. Step 6: Final answer
    x = 298,970.55

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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.