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Finding the Fourth Proportional to 333,970.76, 500,955.78 and 81,249.68

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Solution

The fourth proportional to 333,970.76, 500,955.78 and 81,249.68 is: 121,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,970.76 : 500,955.78 = 81,249.68 : x
  2. Step 2: Convert to fraction form
    333,970.76/500,955.78 = 81,249.68/x
  3. Step 3: Cross multiply
    333,970.76x = 500,955.78 × 81,249.68
  4. Step 4: Simplify right side
    333,970.76x = 40,702,496,819.15
  5. Step 5: Solve for x
    x = 40,702,496,819.15/333,970.76
  6. Step 6: Final answer
    x = 121,874.43

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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.