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Finding the Fourth Proportional to 333,780.66, 500,665.52 and 81,063.23

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Solution

The fourth proportional to 333,780.66, 500,665.52 and 81,063.23 is: 121,593.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,780.66 : 500,665.52 = 81,063.23 : x
  2. Step 2: Convert to fraction form
    333,780.66/500,665.52 = 81,063.23/x
  3. Step 3: Cross multiply
    333,780.66x = 500,665.52 × 81,063.23
  4. Step 4: Simplify right side
    333,780.66x = 40,585,561,900.16
  5. Step 5: Solve for x
    x = 40,585,561,900.16/333,780.66
  6. Step 6: Final answer
    x = 121,593.51

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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.