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Finding the Fourth Proportional to 406,371.80, 609,630.60 and 169,738.40

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Solution

The fourth proportional to 406,371.80, 609,630.60 and 169,738.40 is: 254,638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,371.80 : 609,630.60 = 169,738.40 : x
  2. Step 2: Convert to fraction form
    406,371.80/609,630.60 = 169,738.40/x
  3. Step 3: Cross multiply
    406,371.80x = 609,630.60 × 169,738.40
  4. Step 4: Simplify right side
    406,371.80x = 103,477,722,635.04
  5. Step 5: Solve for x
    x = 103,477,722,635.04/406,371.80
  6. Step 6: Final answer
    x = 254,638.05

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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.