Home / 219,817.34-303,251.61-129,132.39

Finding the Fourth Proportional to 219,817.34, 303,251.61 and 129,132.39

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Solution

The fourth proportional to 219,817.34, 303,251.61 and 129,132.39 is: 178,146.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,817.34 : 303,251.61 = 129,132.39 : x
  2. Step 2: Convert to fraction form
    219,817.34/303,251.61 = 129,132.39/x
  3. Step 3: Cross multiply
    219,817.34x = 303,251.61 × 129,132.39
  4. Step 4: Simplify right side
    219,817.34x = 39,159,605,170.65
  5. Step 5: Solve for x
    x = 39,159,605,170.65/219,817.34
  6. Step 6: Final answer
    x = 178,146.12

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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.