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Finding the Fourth Proportional to 354,609.40, 489,682.92 and 263,932.24

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Solution

The fourth proportional to 354,609.40, 489,682.92 and 263,932.24 is: 364,466.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,609.40 : 489,682.92 = 263,932.24 : x
  2. Step 2: Convert to fraction form
    354,609.40/489,682.92 = 263,932.24/x
  3. Step 3: Cross multiply
    354,609.40x = 489,682.92 × 263,932.24
  4. Step 4: Simplify right side
    354,609.40x = 129,243,109,965.34
  5. Step 5: Solve for x
    x = 129,243,109,965.34/354,609.40
  6. Step 6: Final answer
    x = 364,466.11

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1.5x scale

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.