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Finding the Fourth Proportional to 262,892.40, 394,476.30 and 120,780.60

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Solution

The fourth proportional to 262,892.40, 394,476.30 and 120,780.60 is: 181,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,892.40 : 394,476.30 = 120,780.60 : x
  2. Step 2: Convert to fraction form
    262,892.40/394,476.30 = 120,780.60/x
  3. Step 3: Cross multiply
    262,892.40x = 394,476.30 × 120,780.60
  4. Step 4: Simplify right side
    262,892.40x = 47,645,084,199.78
  5. Step 5: Solve for x
    x = 47,645,084,199.78/262,892.40
  6. Step 6: Final answer
    x = 181,234.16

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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.