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Finding the Fourth Proportional to 311,781.60, 467,672.40 and 101,440.80

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Solution

The fourth proportional to 311,781.60, 467,672.40 and 101,440.80 is: 152,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,781.60 : 467,672.40 = 101,440.80 : x
  2. Step 2: Convert to fraction form
    311,781.60/467,672.40 = 101,440.80/x
  3. Step 3: Cross multiply
    311,781.60x = 467,672.40 × 101,440.80
  4. Step 4: Simplify right side
    311,781.60x = 47,441,062,393.92
  5. Step 5: Solve for x
    x = 47,441,062,393.92/311,781.60
  6. Step 6: Final answer
    x = 152,161.20

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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.