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Finding the Fourth Proportional to 260,960.80, 391,441.20 and 94,727.20

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Solution

The fourth proportional to 260,960.80, 391,441.20 and 94,727.20 is: 142,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,960.80 : 391,441.20 = 94,727.20 : x
  2. Step 2: Convert to fraction form
    260,960.80/391,441.20 = 94,727.20/x
  3. Step 3: Cross multiply
    260,960.80x = 391,441.20 × 94,727.20
  4. Step 4: Simplify right side
    260,960.80x = 37,080,128,840.64
  5. Step 5: Solve for x
    x = 37,080,128,840.64/260,960.80
  6. Step 6: Final answer
    x = 142,090.80

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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.