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Finding the Fourth Proportional to 388,086.80, 582,130.20 and 163,700.60

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Solution

The fourth proportional to 388,086.80, 582,130.20 and 163,700.60 is: 245,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,086.80 : 582,130.20 = 163,700.60 : x
  2. Step 2: Convert to fraction form
    388,086.80/582,130.20 = 163,700.60/x
  3. Step 3: Cross multiply
    388,086.80x = 582,130.20 × 163,700.60
  4. Step 4: Simplify right side
    388,086.80x = 95,295,063,018.12
  5. Step 5: Solve for x
    x = 95,295,063,018.12/388,086.80
  6. Step 6: Final answer
    x = 245,550.90

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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.