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Finding the Fourth Proportional to 309,291.61, 426,802.22 and 181,942.60

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Solution

The fourth proportional to 309,291.61, 426,802.22 and 181,942.60 is: 251,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,291.61 : 426,802.22 = 181,942.60 : x
  2. Step 2: Convert to fraction form
    309,291.61/426,802.22 = 181,942.60/x
  3. Step 3: Cross multiply
    309,291.61x = 426,802.22 × 181,942.60
  4. Step 4: Simplify right side
    309,291.61x = 77,653,504,682.86
  5. Step 5: Solve for x
    x = 77,653,504,682.86/309,291.61
  6. Step 6: Final answer
    x = 251,068.90

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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.