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Finding the Fourth Proportional to 321,120.01, 442,725.53 and 276,279.67

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Solution

The fourth proportional to 321,120.01, 442,725.53 and 276,279.67 is: 380,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,120.01 : 442,725.53 = 276,279.67 : x
  2. Step 2: Convert to fraction form
    321,120.01/442,725.53 = 276,279.67/x
  3. Step 3: Cross multiply
    321,120.01x = 442,725.53 × 276,279.67
  4. Step 4: Simplify right side
    321,120.01x = 122,316,062,500.98
  5. Step 5: Solve for x
    x = 122,316,062,500.98/321,120.01
  6. Step 6: Final answer
    x = 380,904.52

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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.