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Finding the Fourth Proportional to 272,133.40, 408,005 and 127,958.52

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Solution

The fourth proportional to 272,133.40, 408,005 and 127,958.52 is: 191,846.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,133.40 : 408,005 = 127,958.52 : x
  2. Step 2: Convert to fraction form
    272,133.40/408,005 = 127,958.52/x
  3. Step 3: Cross multiply
    272,133.40x = 408,005 × 127,958.52
  4. Step 4: Simplify right side
    272,133.40x = 52,207,715,952.60
  5. Step 5: Solve for x
    x = 52,207,715,952.60/272,133.40
  6. Step 6: Final answer
    x = 191,846.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.