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Finding the Fourth Proportional to 260,840.54, 391,260.81 and 73,853.66

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Solution

The fourth proportional to 260,840.54, 391,260.81 and 73,853.66 is: 110,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,840.54 : 391,260.81 = 73,853.66 : x
  2. Step 2: Convert to fraction form
    260,840.54/391,260.81 = 73,853.66/x
  3. Step 3: Cross multiply
    260,840.54x = 391,260.81 × 73,853.66
  4. Step 4: Simplify right side
    260,840.54x = 28,896,042,833.06
  5. Step 5: Solve for x
    x = 28,896,042,833.06/260,840.54
  6. Step 6: Final answer
    x = 110,780.49

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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.