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Finding the Fourth Proportional to 260,946.88, 391,420.36 and 73,958.40

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Solution

The fourth proportional to 260,946.88, 391,420.36 and 73,958.40 is: 110,937.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,946.88 : 391,420.36 = 73,958.40 : x
  2. Step 2: Convert to fraction form
    260,946.88/391,420.36 = 73,958.40/x
  3. Step 3: Cross multiply
    260,946.88x = 391,420.36 × 73,958.40
  4. Step 4: Simplify right side
    260,946.88x = 28,948,823,553.02
  5. Step 5: Solve for x
    x = 28,948,823,553.02/260,946.88
  6. Step 6: Final answer
    x = 110,937.61

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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.