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Finding the Fourth Proportional to 366,311.52, 505,395.12 and 205,144.80

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Solution

The fourth proportional to 366,311.52, 505,395.12 and 205,144.80 is: 283,035.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,311.52 : 505,395.12 = 205,144.80 : x
  2. Step 2: Convert to fraction form
    366,311.52/505,395.12 = 205,144.80/x
  3. Step 3: Cross multiply
    366,311.52x = 505,395.12 × 205,144.80
  4. Step 4: Simplify right side
    366,311.52x = 103,679,180,813.38
  5. Step 5: Solve for x
    x = 103,679,180,813.38/366,311.52
  6. Step 6: Final answer
    x = 283,035.55

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1.5x scale

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.