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Finding the Fourth Proportional to 403,999.98, 605,998.98 and 119,712.66

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Solution

The fourth proportional to 403,999.98, 605,998.98 and 119,712.66 is: 179,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,999.98 : 605,998.98 = 119,712.66 : x
  2. Step 2: Convert to fraction form
    403,999.98/605,998.98 = 119,712.66/x
  3. Step 3: Cross multiply
    403,999.98x = 605,998.98 × 119,712.66
  4. Step 4: Simplify right side
    403,999.98x = 72,545,749,853.09
  5. Step 5: Solve for x
    x = 72,545,749,853.09/403,999.98
  6. Step 6: Final answer
    x = 179,568.70

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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.