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Finding the Fourth Proportional to 354,741.33, 489,554.49 and 201,775.59

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Solution

The fourth proportional to 354,741.33, 489,554.49 and 201,775.59 is: 278,456.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,741.33 : 489,554.49 = 201,775.59 : x
  2. Step 2: Convert to fraction form
    354,741.33/489,554.49 = 201,775.59/x
  3. Step 3: Cross multiply
    354,741.33x = 489,554.49 × 201,775.59
  4. Step 4: Simplify right side
    354,741.33x = 98,780,146,056.90
  5. Step 5: Solve for x
    x = 98,780,146,056.90/354,741.33
  6. Step 6: Final answer
    x = 278,456.83

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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.