Home / 266,022.09-399,040.02-76,474.80

Finding the Fourth Proportional to 266,022.09, 399,040.02 and 76,474.80

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Solution

The fourth proportional to 266,022.09, 399,040.02 and 76,474.80 is: 114,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,022.09 : 399,040.02 = 76,474.80 : x
  2. Step 2: Convert to fraction form
    266,022.09/399,040.02 = 76,474.80/x
  3. Step 3: Cross multiply
    266,022.09x = 399,040.02 × 76,474.80
  4. Step 4: Simplify right side
    266,022.09x = 30,516,505,721.50
  5. Step 5: Solve for x
    x = 30,516,505,721.50/266,022.09
  6. Step 6: Final answer
    x = 114,714.18

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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.