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Finding the Fourth Proportional to 353,992.23, 530,669.50 and 129,194.93

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Solution

The fourth proportional to 353,992.23, 530,669.50 and 129,194.93 is: 193,676.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,992.23 : 530,669.50 = 129,194.93 : x
  2. Step 2: Convert to fraction form
    353,992.23/530,669.50 = 129,194.93/x
  3. Step 3: Cross multiply
    353,992.23x = 530,669.50 × 129,194.93
  4. Step 4: Simplify right side
    353,992.23x = 68,559,808,905.64
  5. Step 5: Solve for x
    x = 68,559,808,905.64/353,992.23
  6. Step 6: Final answer
    x = 193,676.03

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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.