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Finding the Fourth Proportional to 399,635.99, 599,049.99 and 172,080.01

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Solution

The fourth proportional to 399,635.99, 599,049.99 and 172,080.01 is: 257,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,635.99 : 599,049.99 = 172,080.01 : x
  2. Step 2: Convert to fraction form
    399,635.99/599,049.99 = 172,080.01/x
  3. Step 3: Cross multiply
    399,635.99x = 599,049.99 × 172,080.01
  4. Step 4: Simplify right side
    399,635.99x = 103,084,526,733.26
  5. Step 5: Solve for x
    x = 103,084,526,733.26/399,635.99
  6. Step 6: Final answer
    x = 257,946.05

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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.