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Finding the Fourth Proportional to 260,040.30, 389,623.05 and 222,423.90

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Solution

The fourth proportional to 260,040.30, 389,623.05 and 222,423.90 is: 333,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,040.30 : 389,623.05 = 222,423.90 : x
  2. Step 2: Convert to fraction form
    260,040.30/389,623.05 = 222,423.90/x
  3. Step 3: Cross multiply
    260,040.30x = 389,623.05 × 222,423.90
  4. Step 4: Simplify right side
    260,040.30x = 86,661,478,310.90
  5. Step 5: Solve for x
    x = 86,661,478,310.90/260,040.30
  6. Step 6: Final answer
    x = 333,261.72

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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.