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Finding the Fourth Proportional to 388,395.06, 536,289.22 and 303,753.30

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Solution

The fourth proportional to 388,395.06, 536,289.22 and 303,753.30 is: 419,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,395.06 : 536,289.22 = 303,753.30 : x
  2. Step 2: Convert to fraction form
    388,395.06/536,289.22 = 303,753.30/x
  3. Step 3: Cross multiply
    388,395.06x = 536,289.22 × 303,753.30
  4. Step 4: Simplify right side
    388,395.06x = 162,899,620,329.43
  5. Step 5: Solve for x
    x = 162,899,620,329.43/388,395.06
  6. Step 6: Final answer
    x = 419,417.33

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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.