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Finding the Fourth Proportional to 388,847.88, 536,760.54 and 303,992.28

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Solution

The fourth proportional to 388,847.88, 536,760.54 and 303,992.28 is: 419,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,847.88 : 536,760.54 = 303,992.28 : x
  2. Step 2: Convert to fraction form
    388,847.88/536,760.54 = 303,992.28/x
  3. Step 3: Cross multiply
    388,847.88x = 536,760.54 × 303,992.28
  4. Step 4: Simplify right side
    388,847.88x = 163,171,060,368.63
  5. Step 5: Solve for x
    x = 163,171,060,368.63/388,847.88
  6. Step 6: Final answer
    x = 419,626.98

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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.