Home / 219,020.83-302,313.38-128,396.41

Finding the Fourth Proportional to 219,020.83, 302,313.38 and 128,396.41

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Solution

The fourth proportional to 219,020.83, 302,313.38 and 128,396.41 is: 177,224.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,020.83 : 302,313.38 = 128,396.41 : x
  2. Step 2: Convert to fraction form
    219,020.83/302,313.38 = 128,396.41/x
  3. Step 3: Cross multiply
    219,020.83x = 302,313.38 × 128,396.41
  4. Step 4: Simplify right side
    219,020.83x = 38,815,951,289.20
  5. Step 5: Solve for x
    x = 38,815,951,289.20/219,020.83
  6. Step 6: Final answer
    x = 177,224.93

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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.