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Finding the Fourth Proportional to 400,807.39, 600,288.44 and 231,908.80

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Solution

The fourth proportional to 400,807.39, 600,288.44 and 231,908.80 is: 347,329.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,807.39 : 600,288.44 = 231,908.80 : x
  2. Step 2: Convert to fraction form
    400,807.39/600,288.44 = 231,908.80/x
  3. Step 3: Cross multiply
    400,807.39x = 600,288.44 × 231,908.80
  4. Step 4: Simplify right side
    400,807.39x = 139,212,170,507.97
  5. Step 5: Solve for x
    x = 139,212,170,507.97/400,807.39
  6. Step 6: Final answer
    x = 347,329.35

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1.5x scale

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.