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Finding the Fourth Proportional to 308,625.75, 462,891.78 and 84,003.66

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Solution

The fourth proportional to 308,625.75, 462,891.78 and 84,003.66 is: 125,992.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,625.75 : 462,891.78 = 84,003.66 : x
  2. Step 2: Convert to fraction form
    308,625.75/462,891.78 = 84,003.66/x
  3. Step 3: Cross multiply
    308,625.75x = 462,891.78 × 84,003.66
  4. Step 4: Simplify right side
    308,625.75x = 38,884,603,703.91
  5. Step 5: Solve for x
    x = 38,884,603,703.91/308,625.75
  6. Step 6: Final answer
    x = 125,992.74

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1.5x scale

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.