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Finding the Fourth Proportional to 406,351.60, 609,308.70 and 169,426.60

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Solution

The fourth proportional to 406,351.60, 609,308.70 and 169,426.60 is: 254,048.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,351.60 : 609,308.70 = 169,426.60 : x
  2. Step 2: Convert to fraction form
    406,351.60/609,308.70 = 169,426.60/x
  3. Step 3: Cross multiply
    406,351.60x = 609,308.70 × 169,426.60
  4. Step 4: Simplify right side
    406,351.60x = 103,233,101,391.42
  5. Step 5: Solve for x
    x = 103,233,101,391.42/406,351.60
  6. Step 6: Final answer
    x = 254,048.71

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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.