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Finding the Fourth Proportional to 399,692.68, 599,579.10 and 115,390.24

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Solution

The fourth proportional to 399,692.68, 599,579.10 and 115,390.24 is: 173,096.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,692.68 : 599,579.10 = 115,390.24 : x
  2. Step 2: Convert to fraction form
    399,692.68/599,579.10 = 115,390.24/x
  3. Step 3: Cross multiply
    399,692.68x = 599,579.10 × 115,390.24
  4. Step 4: Simplify right side
    399,692.68x = 69,185,576,247.98
  5. Step 5: Solve for x
    x = 69,185,576,247.98/399,692.68
  6. Step 6: Final answer
    x = 173,096.93

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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.