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Finding the Fourth Proportional to 406,495.40, 609,807.90 and 169,716.20

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Solution

The fourth proportional to 406,495.40, 609,807.90 and 169,716.20 is: 254,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,495.40 : 609,807.90 = 169,716.20 : x
  2. Step 2: Convert to fraction form
    406,495.40/609,807.90 = 169,716.20/x
  3. Step 3: Cross multiply
    406,495.40x = 609,807.90 × 169,716.20
  4. Step 4: Simplify right side
    406,495.40x = 103,494,279,517.98
  5. Step 5: Solve for x
    x = 103,494,279,517.98/406,495.40
  6. Step 6: Final answer
    x = 254,601.35

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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.