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Finding the Fourth Proportional to 354,917.88, 489,604.40 and 234,015.06

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Solution

The fourth proportional to 354,917.88, 489,604.40 and 234,015.06 is: 322,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,917.88 : 489,604.40 = 234,015.06 : x
  2. Step 2: Convert to fraction form
    354,917.88/489,604.40 = 234,015.06/x
  3. Step 3: Cross multiply
    354,917.88x = 489,604.40 × 234,015.06
  4. Step 4: Simplify right side
    354,917.88x = 114,574,801,872.19
  5. Step 5: Solve for x
    x = 114,574,801,872.19/354,917.88
  6. Step 6: Final answer
    x = 322,820.60

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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.