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Finding the Fourth Proportional to 399,969.63, 599,985.36 and 133,731.27

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Solution

The fourth proportional to 399,969.63, 599,985.36 and 133,731.27 is: 200,607.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,969.63 : 599,985.36 = 133,731.27 : x
  2. Step 2: Convert to fraction form
    399,969.63/599,985.36 = 133,731.27/x
  3. Step 3: Cross multiply
    399,969.63x = 599,985.36 × 133,731.27
  4. Step 4: Simplify right side
    399,969.63x = 80,236,804,174.21
  5. Step 5: Solve for x
    x = 80,236,804,174.21/399,969.63
  6. Step 6: Final answer
    x = 200,607.24

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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.