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Finding the Fourth Proportional to 485,537.73, 728,755.75 and 245,820.05

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Solution

The fourth proportional to 485,537.73, 728,755.75 and 245,820.05 is: 368,957.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,537.73 : 728,755.75 = 245,820.05 : x
  2. Step 2: Convert to fraction form
    485,537.73/728,755.75 = 245,820.05/x
  3. Step 3: Cross multiply
    485,537.73x = 728,755.75 × 245,820.05
  4. Step 4: Simplify right side
    485,537.73x = 179,142,774,299.12
  5. Step 5: Solve for x
    x = 179,142,774,299.12/485,537.73
  6. Step 6: Final answer
    x = 368,957.48

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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.