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Finding the Fourth Proportional to 219,701.10, 329,551.65 and 69,940.20

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Solution

The fourth proportional to 219,701.10, 329,551.65 and 69,940.20 is: 104,910.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,701.10 : 329,551.65 = 69,940.20 : x
  2. Step 2: Convert to fraction form
    219,701.10/329,551.65 = 69,940.20/x
  3. Step 3: Cross multiply
    219,701.10x = 329,551.65 × 69,940.20
  4. Step 4: Simplify right side
    219,701.10x = 23,048,908,311.33
  5. Step 5: Solve for x
    x = 23,048,908,311.33/219,701.10
  6. Step 6: Final answer
    x = 104,910.30

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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.