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Finding the Fourth Proportional to 394,662.92, 544,271.40 and 258,647.31

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Solution

The fourth proportional to 394,662.92, 544,271.40 and 258,647.31 is: 356,695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,662.92 : 544,271.40 = 258,647.31 : x
  2. Step 2: Convert to fraction form
    394,662.92/544,271.40 = 258,647.31/x
  3. Step 3: Cross multiply
    394,662.92x = 544,271.40 × 258,647.31
  4. Step 4: Simplify right side
    394,662.92x = 140,774,333,519.93
  5. Step 5: Solve for x
    x = 140,774,333,519.93/394,662.92
  6. Step 6: Final answer
    x = 356,695.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.