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Finding the Fourth Proportional to 321,489.45, 482,254.23 and 84,832.38

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Solution

The fourth proportional to 321,489.45, 482,254.23 and 84,832.38 is: 127,253.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,489.45 : 482,254.23 = 84,832.38 : x
  2. Step 2: Convert to fraction form
    321,489.45/482,254.23 = 84,832.38/x
  3. Step 3: Cross multiply
    321,489.45x = 482,254.23 × 84,832.38
  4. Step 4: Simplify right side
    321,489.45x = 40,910,774,095.97
  5. Step 5: Solve for x
    x = 40,910,774,095.97/321,489.45
  6. Step 6: Final answer
    x = 127,253.86

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1.5x scale

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.