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Finding the Fourth Proportional to 400,933.80, 601,400.70 and 259,216.20

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Solution

The fourth proportional to 400,933.80, 601,400.70 and 259,216.20 is: 388,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,933.80 : 601,400.70 = 259,216.20 : x
  2. Step 2: Convert to fraction form
    400,933.80/601,400.70 = 259,216.20/x
  3. Step 3: Cross multiply
    400,933.80x = 601,400.70 × 259,216.20
  4. Step 4: Simplify right side
    400,933.80x = 155,892,804,131.34
  5. Step 5: Solve for x
    x = 155,892,804,131.34/400,933.80
  6. Step 6: Final answer
    x = 388,824.30

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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.