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Finding the Fourth Proportional to 272,045.20, 408,067.80 and 188,064.40

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Solution

The fourth proportional to 272,045.20, 408,067.80 and 188,064.40 is: 282,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,045.20 : 408,067.80 = 188,064.40 : x
  2. Step 2: Convert to fraction form
    272,045.20/408,067.80 = 188,064.40/x
  3. Step 3: Cross multiply
    272,045.20x = 408,067.80 × 188,064.40
  4. Step 4: Simplify right side
    272,045.20x = 76,743,025,966.32
  5. Step 5: Solve for x
    x = 76,743,025,966.32/272,045.20
  6. Step 6: Final answer
    x = 282,096.60

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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.