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Finding the Fourth Proportional to 333,994.86, 500,985 and 81,276.48

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Solution

The fourth proportional to 333,994.86, 500,985 and 81,276.48 is: 121,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,994.86 : 500,985 = 81,276.48 : x
  2. Step 2: Convert to fraction form
    333,994.86/500,985 = 81,276.48/x
  3. Step 3: Cross multiply
    333,994.86x = 500,985 × 81,276.48
  4. Step 4: Simplify right side
    333,994.86x = 40,718,297,332.80
  5. Step 5: Solve for x
    x = 40,718,297,332.80/333,994.86
  6. Step 6: Final answer
    x = 121,912.95

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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.