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Finding the Fourth Proportional to 393,041.94, 589,687.52 and 140,317.00

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Solution

The fourth proportional to 393,041.94, 589,687.52 and 140,317.00 is: 210,519.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,041.94 : 589,687.52 = 140,317.00 : x
  2. Step 2: Convert to fraction form
    393,041.94/589,687.52 = 140,317.00/x
  3. Step 3: Cross multiply
    393,041.94x = 589,687.52 × 140,317.00
  4. Step 4: Simplify right side
    393,041.94x = 82,743,181,568.04
  5. Step 5: Solve for x
    x = 82,743,181,568.04/393,041.94
  6. Step 6: Final answer
    x = 210,519.98

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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.