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Finding the Fourth Proportional to 321,953.80, 482,736.30 and 144,427.72

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Solution

The fourth proportional to 321,953.80, 482,736.30 and 144,427.72 is: 216,554.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,953.80 : 482,736.30 = 144,427.72 : x
  2. Step 2: Convert to fraction form
    321,953.80/482,736.30 = 144,427.72/x
  3. Step 3: Cross multiply
    321,953.80x = 482,736.30 × 144,427.72
  4. Step 4: Simplify right side
    321,953.80x = 69,720,503,170.24
  5. Step 5: Solve for x
    x = 69,720,503,170.24/321,953.80
  6. Step 6: Final answer
    x = 216,554.37

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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.