Home / 219,729.28-303,228.72-129,089.02

Finding the Fourth Proportional to 219,729.28, 303,228.72 and 129,089.02

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Solution

The fourth proportional to 219,729.28, 303,228.72 and 129,089.02 is: 178,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,729.28 : 303,228.72 = 129,089.02 : x
  2. Step 2: Convert to fraction form
    219,729.28/303,228.72 = 129,089.02/x
  3. Step 3: Cross multiply
    219,729.28x = 303,228.72 × 129,089.02
  4. Step 4: Simplify right side
    219,729.28x = 39,143,498,300.65
  5. Step 5: Solve for x
    x = 39,143,498,300.65/219,729.28
  6. Step 6: Final answer
    x = 178,144.21

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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.