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Finding the Fourth Proportional to 388,445.28, 582,382.80 and 163,796.64

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Solution

The fourth proportional to 388,445.28, 582,382.80 and 163,796.64 is: 245,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,445.28 : 582,382.80 = 163,796.64 : x
  2. Step 2: Convert to fraction form
    388,445.28/582,382.80 = 163,796.64/x
  3. Step 3: Cross multiply
    388,445.28x = 582,382.80 × 163,796.64
  4. Step 4: Simplify right side
    388,445.28x = 95,392,345,833.79
  5. Step 5: Solve for x
    x = 95,392,345,833.79/388,445.28
  6. Step 6: Final answer
    x = 245,574.73

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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.