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Finding the Fourth Proportional to 419,987.11, 629,983.17 and 104,444.02

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Solution

The fourth proportional to 419,987.11, 629,983.17 and 104,444.02 is: 156,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,987.11 : 629,983.17 = 104,444.02 : x
  2. Step 2: Convert to fraction form
    419,987.11/629,983.17 = 104,444.02/x
  3. Step 3: Cross multiply
    419,987.11x = 629,983.17 × 104,444.02
  4. Step 4: Simplify right side
    419,987.11x = 65,797,974,807.14
  5. Step 5: Solve for x
    x = 65,797,974,807.14/419,987.11
  6. Step 6: Final answer
    x = 156,666.65

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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.