Home / 260,829.12-391,260.36-73,855.20

Finding the Fourth Proportional to 260,829.12, 391,260.36 and 73,855.20

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Solution

The fourth proportional to 260,829.12, 391,260.36 and 73,855.20 is: 110,787.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,829.12 : 391,260.36 = 73,855.20 : x
  2. Step 2: Convert to fraction form
    260,829.12/391,260.36 = 73,855.20/x
  3. Step 3: Cross multiply
    260,829.12x = 391,260.36 × 73,855.20
  4. Step 4: Simplify right side
    260,829.12x = 28,896,612,139.87
  5. Step 5: Solve for x
    x = 28,896,612,139.87/260,829.12
  6. Step 6: Final answer
    x = 110,787.52

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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.