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Finding the Fourth Proportional to 321,461.28, 482,166.72 and 121,763.52

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Solution

The fourth proportional to 321,461.28, 482,166.72 and 121,763.52 is: 182,635.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,461.28 : 482,166.72 = 121,763.52 : x
  2. Step 2: Convert to fraction form
    321,461.28/482,166.72 = 121,763.52/x
  3. Step 3: Cross multiply
    321,461.28x = 482,166.72 × 121,763.52
  4. Step 4: Simplify right side
    321,461.28x = 58,710,317,054.05
  5. Step 5: Solve for x
    x = 58,710,317,054.05/321,461.28
  6. Step 6: Final answer
    x = 182,635.73

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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.