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Finding the Fourth Proportional to 330,811.44, 456,116.31 and 279,732.84

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Solution

The fourth proportional to 330,811.44, 456,116.31 and 279,732.84 is: 385,690.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,811.44 : 456,116.31 = 279,732.84 : x
  2. Step 2: Convert to fraction form
    330,811.44/456,116.31 = 279,732.84/x
  3. Step 3: Cross multiply
    330,811.44x = 456,116.31 × 279,732.84
  4. Step 4: Simplify right side
    330,811.44x = 127,590,710,766.62
  5. Step 5: Solve for x
    x = 127,590,710,766.62/330,811.44
  6. Step 6: Final answer
    x = 385,690.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.