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Finding the Fourth Proportional to 321,484.60, 482,081.10 and 121,738.60

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Solution

The fourth proportional to 321,484.60, 482,081.10 and 121,738.60 is: 182,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,484.60 : 482,081.10 = 121,738.60 : x
  2. Step 2: Convert to fraction form
    321,484.60/482,081.10 = 121,738.60/x
  3. Step 3: Cross multiply
    321,484.60x = 482,081.10 × 121,738.60
  4. Step 4: Simplify right side
    321,484.60x = 58,687,878,200.46
  5. Step 5: Solve for x
    x = 58,687,878,200.46/321,484.60
  6. Step 6: Final answer
    x = 182,552.69

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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.