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Finding the Fourth Proportional to 388,700.28, 582,800.80 and 163,999.24

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Solution

The fourth proportional to 388,700.28, 582,800.80 and 163,999.24 is: 245,893.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,700.28 : 582,800.80 = 163,999.24 : x
  2. Step 2: Convert to fraction form
    388,700.28/582,800.80 = 163,999.24/x
  3. Step 3: Cross multiply
    388,700.28x = 582,800.80 × 163,999.24
  4. Step 4: Simplify right side
    388,700.28x = 95,578,888,271.39
  5. Step 5: Solve for x
    x = 95,578,888,271.39/388,700.28
  6. Step 6: Final answer
    x = 245,893.54

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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.