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Finding the Fourth Proportional to 311,781.60, 467,672.40 and 307,634.40

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Solution

The fourth proportional to 311,781.60, 467,672.40 and 307,634.40 is: 461,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,781.60 : 467,672.40 = 307,634.40 : x
  2. Step 2: Convert to fraction form
    311,781.60/467,672.40 = 307,634.40/x
  3. Step 3: Cross multiply
    311,781.60x = 467,672.40 × 307,634.40
  4. Step 4: Simplify right side
    311,781.60x = 143,872,118,170.56
  5. Step 5: Solve for x
    x = 143,872,118,170.56/311,781.60
  6. Step 6: Final answer
    x = 461,451.60

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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.