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Finding the Fourth Proportional to 355,009.92, 489,914.88 and 193,866.72

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Solution

The fourth proportional to 355,009.92, 489,914.88 and 193,866.72 is: 267,536.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,009.92 : 489,914.88 = 193,866.72 : x
  2. Step 2: Convert to fraction form
    355,009.92/489,914.88 = 193,866.72/x
  3. Step 3: Cross multiply
    355,009.92x = 489,914.88 × 193,866.72
  4. Step 4: Simplify right side
    355,009.92x = 94,978,190,864.79
  5. Step 5: Solve for x
    x = 94,978,190,864.79/355,009.92
  6. Step 6: Final answer
    x = 267,536.72

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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.