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Finding the Fourth Proportional to 219,449.40, 329,174.10 and 79,212.60

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Solution

The fourth proportional to 219,449.40, 329,174.10 and 79,212.60 is: 118,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,449.40 : 329,174.10 = 79,212.60 : x
  2. Step 2: Convert to fraction form
    219,449.40/329,174.10 = 79,212.60/x
  3. Step 3: Cross multiply
    219,449.40x = 329,174.10 × 79,212.60
  4. Step 4: Simplify right side
    219,449.40x = 26,074,736,313.66
  5. Step 5: Solve for x
    x = 26,074,736,313.66/219,449.40
  6. Step 6: Final answer
    x = 118,818.90

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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.