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Finding the Fourth Proportional to 219,914.40, 329,852.40 and 72,170.40

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Solution

The fourth proportional to 219,914.40, 329,852.40 and 72,170.40 is: 108,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,914.40 : 329,852.40 = 72,170.40 : x
  2. Step 2: Convert to fraction form
    219,914.40/329,852.40 = 72,170.40/x
  3. Step 3: Cross multiply
    219,914.40x = 329,852.40 × 72,170.40
  4. Step 4: Simplify right side
    219,914.40x = 23,805,579,648.96
  5. Step 5: Solve for x
    x = 23,805,579,648.96/219,914.40
  6. Step 6: Final answer
    x = 108,249.30

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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.