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Finding the Fourth Proportional to 330,869.54, 496,304.36 and 81,551.54

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Solution

The fourth proportional to 330,869.54, 496,304.36 and 81,551.54 is: 122,327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,869.54 : 496,304.36 = 81,551.54 : x
  2. Step 2: Convert to fraction form
    330,869.54/496,304.36 = 81,551.54/x
  3. Step 3: Cross multiply
    330,869.54x = 496,304.36 × 81,551.54
  4. Step 4: Simplify right side
    330,869.54x = 40,474,381,977.43
  5. Step 5: Solve for x
    x = 40,474,381,977.43/330,869.54
  6. Step 6: Final answer
    x = 122,327.32

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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.