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Finding the Fourth Proportional to 366,920.60, 550,380.90 and 328,429.40

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Solution

The fourth proportional to 366,920.60, 550,380.90 and 328,429.40 is: 492,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,920.60 : 550,380.90 = 328,429.40 : x
  2. Step 2: Convert to fraction form
    366,920.60/550,380.90 = 328,429.40/x
  3. Step 3: Cross multiply
    366,920.60x = 550,380.90 × 328,429.40
  4. Step 4: Simplify right side
    366,920.60x = 180,761,268,758.46
  5. Step 5: Solve for x
    x = 180,761,268,758.46/366,920.60
  6. Step 6: Final answer
    x = 492,644.10

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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.