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Finding the Fourth Proportional to 485,596.94, 728,461.88 and 165,662.91

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Solution

The fourth proportional to 485,596.94, 728,461.88 and 165,662.91 is: 248,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,596.94 : 728,461.88 = 165,662.91 : x
  2. Step 2: Convert to fraction form
    485,596.94/728,461.88 = 165,662.91/x
  3. Step 3: Cross multiply
    485,596.94x = 728,461.88 × 165,662.91
  4. Step 4: Simplify right side
    485,596.94x = 120,679,114,036.56
  5. Step 5: Solve for x
    x = 120,679,114,036.56/485,596.94
  6. Step 6: Final answer
    x = 248,517.04

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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.