Home / 219,817.17-303,390.87-129,202.47

Finding the Fourth Proportional to 219,817.17, 303,390.87 and 129,202.47

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Solution

The fourth proportional to 219,817.17, 303,390.87 and 129,202.47 is: 178,324.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,817.17 : 303,390.87 = 129,202.47 : x
  2. Step 2: Convert to fraction form
    219,817.17/303,390.87 = 129,202.47/x
  3. Step 3: Cross multiply
    219,817.17x = 303,390.87 × 129,202.47
  4. Step 4: Simplify right side
    219,817.17x = 39,198,849,779.45
  5. Step 5: Solve for x
    x = 39,198,849,779.45/219,817.17
  6. Step 6: Final answer
    x = 178,324.79

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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.