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Finding the Fourth Proportional to 354,445.92, 489,228.39 and 201,573.54

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Solution

The fourth proportional to 354,445.92, 489,228.39 and 201,573.54 is: 278,224.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,445.92 : 489,228.39 = 201,573.54 : x
  2. Step 2: Convert to fraction form
    354,445.92/489,228.39 = 201,573.54/x
  3. Step 3: Cross multiply
    354,445.92x = 489,228.39 × 201,573.54
  4. Step 4: Simplify right side
    354,445.92x = 98,615,498,440.80
  5. Step 5: Solve for x
    x = 98,615,498,440.80/354,445.92
  6. Step 6: Final answer
    x = 278,224.39

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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.