Home / 321,115.18-442,718.85-276,274.83

Finding the Fourth Proportional to 321,115.18, 442,718.85 and 276,274.83

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Solution

The fourth proportional to 321,115.18, 442,718.85 and 276,274.83 is: 380,897.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,115.18 : 442,718.85 = 276,274.83 : x
  2. Step 2: Convert to fraction form
    321,115.18/442,718.85 = 276,274.83/x
  3. Step 3: Cross multiply
    321,115.18x = 442,718.85 × 276,274.83
  4. Step 4: Simplify right side
    321,115.18x = 122,312,073,640.17
  5. Step 5: Solve for x
    x = 122,312,073,640.17/321,115.18
  6. Step 6: Final answer
    x = 380,897.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.