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Finding the Fourth Proportional to 272,287.20, 408,085.20 and 242,565.60

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Solution

The fourth proportional to 272,287.20, 408,085.20 and 242,565.60 is: 363,540.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,287.20 : 408,085.20 = 242,565.60 : x
  2. Step 2: Convert to fraction form
    272,287.20/408,085.20 = 242,565.60/x
  3. Step 3: Cross multiply
    272,287.20x = 408,085.20 × 242,565.60
  4. Step 4: Simplify right side
    272,287.20x = 98,987,431,389.12
  5. Step 5: Solve for x
    x = 98,987,431,389.12/272,287.20
  6. Step 6: Final answer
    x = 363,540.52

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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.