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Finding the Fourth Proportional to 406,087.11, 609,007.59 and 169,374.43

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Solution

The fourth proportional to 406,087.11, 609,007.59 and 169,374.43 is: 254,010.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,087.11 : 609,007.59 = 169,374.43 : x
  2. Step 2: Convert to fraction form
    406,087.11/609,007.59 = 169,374.43/x
  3. Step 3: Cross multiply
    406,087.11x = 609,007.59 × 169,374.43
  4. Step 4: Simplify right side
    406,087.11x = 103,150,313,421.92
  5. Step 5: Solve for x
    x = 103,150,313,421.92/406,087.11
  6. Step 6: Final answer
    x = 254,010.31

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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.