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Finding the Fourth Proportional to 354,842.64, 489,678.66 and 193,704.48

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Solution

The fourth proportional to 354,842.64, 489,678.66 and 193,704.48 is: 267,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,842.64 : 489,678.66 = 193,704.48 : x
  2. Step 2: Convert to fraction form
    354,842.64/489,678.66 = 193,704.48/x
  3. Step 3: Cross multiply
    354,842.64x = 489,678.66 × 193,704.48
  4. Step 4: Simplify right side
    354,842.64x = 94,852,950,202.40
  5. Step 5: Solve for x
    x = 94,852,950,202.40/354,842.64
  6. Step 6: Final answer
    x = 267,309.90

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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.