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Finding the Fourth Proportional to 333,718, 500,571.69 and 81,000.58

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Solution

The fourth proportional to 333,718, 500,571.69 and 81,000.58 is: 121,499.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,718 : 500,571.69 = 81,000.58 : x
  2. Step 2: Convert to fraction form
    333,718/500,571.69 = 81,000.58/x
  3. Step 3: Cross multiply
    333,718x = 500,571.69 × 81,000.58
  4. Step 4: Simplify right side
    333,718x = 40,546,597,221.58
  5. Step 5: Solve for x
    x = 40,546,597,221.58/333,718
  6. Step 6: Final answer
    x = 121,499.58

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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.