Home / 321,336.90-479,132.49-312,508.98

Finding the Fourth Proportional to 321,336.90, 479,132.49 and 312,508.98

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Solution

The fourth proportional to 321,336.90, 479,132.49 and 312,508.98 is: 465,969.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,336.90 : 479,132.49 = 312,508.98 : x
  2. Step 2: Convert to fraction form
    321,336.90/479,132.49 = 312,508.98/x
  3. Step 3: Cross multiply
    321,336.90x = 479,132.49 × 312,508.98
  4. Step 4: Simplify right side
    321,336.90x = 149,733,205,734.76
  5. Step 5: Solve for x
    x = 149,733,205,734.76/321,336.90
  6. Step 6: Final answer
    x = 465,969.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.