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Finding the Fourth Proportional to 399,551.88, 599,127.18 and 133,218.12

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Solution

The fourth proportional to 399,551.88, 599,127.18 and 133,218.12 is: 199,760.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,551.88 : 599,127.18 = 133,218.12 : x
  2. Step 2: Convert to fraction form
    399,551.88/599,127.18 = 133,218.12/x
  3. Step 3: Cross multiply
    399,551.88x = 599,127.18 × 133,218.12
  4. Step 4: Simplify right side
    399,551.88x = 79,814,596,560.50
  5. Step 5: Solve for x
    x = 79,814,596,560.50/399,551.88
  6. Step 6: Final answer
    x = 199,760.28

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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.