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Finding the Fourth Proportional to 321,864.60, 482,796.90 and 134,856.60

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Solution

The fourth proportional to 321,864.60, 482,796.90 and 134,856.60 is: 202,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,864.60 : 482,796.90 = 134,856.60 : x
  2. Step 2: Convert to fraction form
    321,864.60/482,796.90 = 134,856.60/x
  3. Step 3: Cross multiply
    321,864.60x = 482,796.90 × 134,856.60
  4. Step 4: Simplify right side
    321,864.60x = 65,108,348,424.54
  5. Step 5: Solve for x
    x = 65,108,348,424.54/321,864.60
  6. Step 6: Final answer
    x = 202,284.90

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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.