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Finding the Fourth Proportional to 550,131.42, 759,180.86 and 308,414.05

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Solution

The fourth proportional to 550,131.42, 759,180.86 and 308,414.05 is: 425,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,131.42 : 759,180.86 = 308,414.05 : x
  2. Step 2: Convert to fraction form
    550,131.42/759,180.86 = 308,414.05/x
  3. Step 3: Cross multiply
    550,131.42x = 759,180.86 × 308,414.05
  4. Step 4: Simplify right side
    550,131.42x = 234,142,043,715.08
  5. Step 5: Solve for x
    x = 234,142,043,715.08/550,131.42
  6. Step 6: Final answer
    x = 425,611.11

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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.