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Finding the Fourth Proportional to 406,478.88, 609,938.64 and 169,842.24

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Solution

The fourth proportional to 406,478.88, 609,938.64 and 169,842.24 is: 254,855.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,478.88 : 609,938.64 = 169,842.24 : x
  2. Step 2: Convert to fraction form
    406,478.88/609,938.64 = 169,842.24/x
  3. Step 3: Cross multiply
    406,478.88x = 609,938.64 × 169,842.24
  4. Step 4: Simplify right side
    406,478.88x = 103,593,344,880.15
  5. Step 5: Solve for x
    x = 103,593,344,880.15/406,478.88
  6. Step 6: Final answer
    x = 254,855.42

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1.5x scale

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.