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Finding the Fourth Proportional to 353,993.23, 530,671 and 129,195.93

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Solution

The fourth proportional to 353,993.23, 530,671 and 129,195.93 is: 193,677.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,993.23 : 530,671 = 129,195.93 : x
  2. Step 2: Convert to fraction form
    353,993.23/530,671 = 129,195.93/x
  3. Step 3: Cross multiply
    353,993.23x = 530,671 × 129,195.93
  4. Step 4: Simplify right side
    353,993.23x = 68,560,533,369.03
  5. Step 5: Solve for x
    x = 68,560,533,369.03/353,993.23
  6. Step 6: Final answer
    x = 193,677.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.