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Finding the Fourth Proportional to 218,218.40, 326,636.40 and 156,010.40

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Solution

The fourth proportional to 218,218.40, 326,636.40 and 156,010.40 is: 233,521.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,218.40 : 326,636.40 = 156,010.40 : x
  2. Step 2: Convert to fraction form
    218,218.40/326,636.40 = 156,010.40/x
  3. Step 3: Cross multiply
    218,218.40x = 326,636.40 × 156,010.40
  4. Step 4: Simplify right side
    218,218.40x = 50,958,675,418.56
  5. Step 5: Solve for x
    x = 50,958,675,418.56/218,218.40
  6. Step 6: Final answer
    x = 233,521.44

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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.