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Finding the Fourth Proportional to 270,802.72, 406,287.12 and 121,168.96

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Solution

The fourth proportional to 270,802.72, 406,287.12 and 121,168.96 is: 181,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,802.72 : 406,287.12 = 121,168.96 : x
  2. Step 2: Convert to fraction form
    270,802.72/406,287.12 = 121,168.96/x
  3. Step 3: Cross multiply
    270,802.72x = 406,287.12 × 121,168.96
  4. Step 4: Simplify right side
    270,802.72x = 49,229,387,791.80
  5. Step 5: Solve for x
    x = 49,229,387,791.80/270,802.72
  6. Step 6: Final answer
    x = 181,790.60

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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.