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Finding the Fourth Proportional to 321,124.62, 442,731.87 and 276,284.27

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Solution

The fourth proportional to 321,124.62, 442,731.87 and 276,284.27 is: 380,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,124.62 : 442,731.87 = 276,284.27 : x
  2. Step 2: Convert to fraction form
    321,124.62/442,731.87 = 276,284.27/x
  3. Step 3: Cross multiply
    321,124.62x = 442,731.87 × 276,284.27
  4. Step 4: Simplify right side
    321,124.62x = 122,319,849,295.03
  5. Step 5: Solve for x
    x = 122,319,849,295.03/321,124.62
  6. Step 6: Final answer
    x = 380,910.84

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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.