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Finding the Fourth Proportional to 219,555.75, 302,819.75 and 188,980.88

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Solution

The fourth proportional to 219,555.75, 302,819.75 and 188,980.88 is: 260,649.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,555.75 : 302,819.75 = 188,980.88 : x
  2. Step 2: Convert to fraction form
    219,555.75/302,819.75 = 188,980.88/x
  3. Step 3: Cross multiply
    219,555.75x = 302,819.75 × 188,980.88
  4. Step 4: Simplify right side
    219,555.75x = 57,227,142,836.38
  5. Step 5: Solve for x
    x = 57,227,142,836.38/219,555.75
  6. Step 6: Final answer
    x = 260,649.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.