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Finding the Fourth Proportional to 406,362.30, 609,616.35 and 169,728.90

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Solution

The fourth proportional to 406,362.30, 609,616.35 and 169,728.90 is: 254,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,362.30 : 609,616.35 = 169,728.90 : x
  2. Step 2: Convert to fraction form
    406,362.30/609,616.35 = 169,728.90/x
  3. Step 3: Cross multiply
    406,362.30x = 609,616.35 × 169,728.90
  4. Step 4: Simplify right side
    406,362.30x = 103,469,512,507.52
  5. Step 5: Solve for x
    x = 103,469,512,507.52/406,362.30
  6. Step 6: Final answer
    x = 254,623.80

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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.