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Finding the Fourth Proportional to 354,840.38, 489,606.60 and 203,908.22

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Solution

The fourth proportional to 354,840.38, 489,606.60 and 203,908.22 is: 281,351.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,840.38 : 489,606.60 = 203,908.22 : x
  2. Step 2: Convert to fraction form
    354,840.38/489,606.60 = 203,908.22/x
  3. Step 3: Cross multiply
    354,840.38x = 489,606.60 × 203,908.22
  4. Step 4: Simplify right side
    354,840.38x = 99,834,810,306.25
  5. Step 5: Solve for x
    x = 99,834,810,306.25/354,840.38
  6. Step 6: Final answer
    x = 281,351.32

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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.