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Finding the Fourth Proportional to 406,425.69, 609,540.49 and 169,640.01

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Solution

The fourth proportional to 406,425.69, 609,540.49 and 169,640.01 is: 254,419.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,425.69 : 609,540.49 = 169,640.01 : x
  2. Step 2: Convert to fraction form
    406,425.69/609,540.49 = 169,640.01/x
  3. Step 3: Cross multiply
    406,425.69x = 609,540.49 × 169,640.01
  4. Step 4: Simplify right side
    406,425.69x = 103,402,454,819.01
  5. Step 5: Solve for x
    x = 103,402,454,819.01/406,425.69
  6. Step 6: Final answer
    x = 254,419.09

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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.