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Finding the Fourth Proportional to 219,118.40, 327,986.40 and 156,910.40

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Solution

The fourth proportional to 219,118.40, 327,986.40 and 156,910.40 is: 234,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,118.40 : 327,986.40 = 156,910.40 : x
  2. Step 2: Convert to fraction form
    219,118.40/327,986.40 = 156,910.40/x
  3. Step 3: Cross multiply
    219,118.40x = 327,986.40 × 156,910.40
  4. Step 4: Simplify right side
    219,118.40x = 51,464,477,218.56
  5. Step 5: Solve for x
    x = 51,464,477,218.56/219,118.40
  6. Step 6: Final answer
    x = 234,870.63

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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.