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Finding the Fourth Proportional to 485,279.92, 728,328.84 and 204,998.32

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Solution

The fourth proportional to 485,279.92, 728,328.84 and 204,998.32 is: 307,670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,279.92 : 728,328.84 = 204,998.32 : x
  2. Step 2: Convert to fraction form
    485,279.92/728,328.84 = 204,998.32/x
  3. Step 3: Cross multiply
    485,279.92x = 728,328.84 × 204,998.32
  4. Step 4: Simplify right side
    485,279.92x = 149,306,188,607.55
  5. Step 5: Solve for x
    x = 149,306,188,607.55/485,279.92
  6. Step 6: Final answer
    x = 307,670.24

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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.