Home / 260,871.45-391,363.38-80,953.35

Finding the Fourth Proportional to 260,871.45, 391,363.38 and 80,953.35

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Solution

The fourth proportional to 260,871.45, 391,363.38 and 80,953.35 is: 121,447.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,871.45 : 391,363.38 = 80,953.35 : x
  2. Step 2: Convert to fraction form
    260,871.45/391,363.38 = 80,953.35/x
  3. Step 3: Cross multiply
    260,871.45x = 391,363.38 × 80,953.35
  4. Step 4: Simplify right side
    260,871.45x = 31,682,176,678.32
  5. Step 5: Solve for x
    x = 31,682,176,678.32/260,871.45
  6. Step 6: Final answer
    x = 121,447.47

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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.