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Finding the Fourth Proportional to 312,760.98, 469,069.38 and 186,436.80

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Solution

The fourth proportional to 312,760.98, 469,069.38 and 186,436.80 is: 279,612.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,760.98 : 469,069.38 = 186,436.80 : x
  2. Step 2: Convert to fraction form
    312,760.98/469,069.38 = 186,436.80/x
  3. Step 3: Cross multiply
    312,760.98x = 469,069.38 × 186,436.80
  4. Step 4: Simplify right side
    312,760.98x = 87,451,794,185.18
  5. Step 5: Solve for x
    x = 87,451,794,185.18/312,760.98
  6. Step 6: Final answer
    x = 279,612.23

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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.