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Finding the Fourth Proportional to 260,827.20, 391,240.80 and 243,331.20

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Solution

The fourth proportional to 260,827.20, 391,240.80 and 243,331.20 is: 364,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,827.20 : 391,240.80 = 243,331.20 : x
  2. Step 2: Convert to fraction form
    260,827.20/391,240.80 = 243,331.20/x
  3. Step 3: Cross multiply
    260,827.20x = 391,240.80 × 243,331.20
  4. Step 4: Simplify right side
    260,827.20x = 95,201,093,352.96
  5. Step 5: Solve for x
    x = 95,201,093,352.96/260,827.20
  6. Step 6: Final answer
    x = 364,996.80

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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.