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Finding the Fourth Proportional to 366,919.10, 550,378.65 and 328,427.90

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Solution

The fourth proportional to 366,919.10, 550,378.65 and 328,427.90 is: 492,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,919.10 : 550,378.65 = 328,427.90 : x
  2. Step 2: Convert to fraction form
    366,919.10/550,378.65 = 328,427.90/x
  3. Step 3: Cross multiply
    366,919.10x = 550,378.65 × 328,427.90
  4. Step 4: Simplify right side
    366,919.10x = 180,759,704,224.34
  5. Step 5: Solve for x
    x = 180,759,704,224.34/366,919.10
  6. Step 6: Final answer
    x = 492,641.85

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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.