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Finding the Fourth Proportional to 354,451.26, 489,123.31 and 201,468.23

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Solution

The fourth proportional to 354,451.26, 489,123.31 and 201,468.23 is: 278,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,451.26 : 489,123.31 = 201,468.23 : x
  2. Step 2: Convert to fraction form
    354,451.26/489,123.31 = 201,468.23/x
  3. Step 3: Cross multiply
    354,451.26x = 489,123.31 × 201,468.23
  4. Step 4: Simplify right side
    354,451.26x = 98,542,806,780.12
  5. Step 5: Solve for x
    x = 98,542,806,780.12/354,451.26
  6. Step 6: Final answer
    x = 278,015.11

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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.