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Finding the Fourth Proportional to 219,416.60, 329,136.28 and 69,668.60

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Solution

The fourth proportional to 219,416.60, 329,136.28 and 69,668.60 is: 104,506.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,416.60 : 329,136.28 = 69,668.60 : x
  2. Step 2: Convert to fraction form
    219,416.60/329,136.28 = 69,668.60/x
  3. Step 3: Cross multiply
    219,416.60x = 329,136.28 × 69,668.60
  4. Step 4: Simplify right side
    219,416.60x = 22,930,463,836.81
  5. Step 5: Solve for x
    x = 22,930,463,836.81/219,416.60
  6. Step 6: Final answer
    x = 104,506.51

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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.