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Finding the Fourth Proportional to 406,268.80, 609,459.84 and 169,557.28

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Solution

The fourth proportional to 406,268.80, 609,459.84 and 169,557.28 is: 254,359.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,268.80 : 609,459.84 = 169,557.28 : x
  2. Step 2: Convert to fraction form
    406,268.80/609,459.84 = 169,557.28/x
  3. Step 3: Cross multiply
    406,268.80x = 609,459.84 × 169,557.28
  4. Step 4: Simplify right side
    406,268.80x = 103,338,352,739.64
  5. Step 5: Solve for x
    x = 103,338,352,739.64/406,268.80
  6. Step 6: Final answer
    x = 254,359.56

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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.