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Finding the Fourth Proportional to 216,479.64, 298,548.40 and 135,914.64

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Solution

The fourth proportional to 216,479.64, 298,548.40 and 135,914.64 is: 187,440.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,479.64 : 298,548.40 = 135,914.64 : x
  2. Step 2: Convert to fraction form
    216,479.64/298,548.40 = 135,914.64/x
  3. Step 3: Cross multiply
    216,479.64x = 298,548.40 × 135,914.64
  4. Step 4: Simplify right side
    216,479.64x = 40,577,098,308.58
  5. Step 5: Solve for x
    x = 40,577,098,308.58/216,479.64
  6. Step 6: Final answer
    x = 187,440.71

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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.