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Finding the Fourth Proportional to 266,558.16, 399,834.36 and 79,571.28

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Solution

The fourth proportional to 266,558.16, 399,834.36 and 79,571.28 is: 119,356.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,558.16 : 399,834.36 = 79,571.28 : x
  2. Step 2: Convert to fraction form
    266,558.16/399,834.36 = 79,571.28/x
  3. Step 3: Cross multiply
    266,558.16x = 399,834.36 × 79,571.28
  4. Step 4: Simplify right side
    266,558.16x = 31,815,331,813.18
  5. Step 5: Solve for x
    x = 31,815,331,813.18/266,558.16
  6. Step 6: Final answer
    x = 119,356.06

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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.