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Finding the Fourth Proportional to 360,016.19, 496,450.21 and 309,197.19

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Solution

The fourth proportional to 360,016.19, 496,450.21 and 309,197.19 is: 426,372.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,016.19 : 496,450.21 = 309,197.19 : x
  2. Step 2: Convert to fraction form
    360,016.19/496,450.21 = 309,197.19/x
  3. Step 3: Cross multiply
    360,016.19x = 496,450.21 × 309,197.19
  4. Step 4: Simplify right side
    360,016.19x = 153,501,009,906.91
  5. Step 5: Solve for x
    x = 153,501,009,906.91/360,016.19
  6. Step 6: Final answer
    x = 426,372.52

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.