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Finding the Fourth Proportional to 329,111.10, 493,666.65 and 79,793.10

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Solution

The fourth proportional to 329,111.10, 493,666.65 and 79,793.10 is: 119,689.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,111.10 : 493,666.65 = 79,793.10 : x
  2. Step 2: Convert to fraction form
    329,111.10/493,666.65 = 79,793.10/x
  3. Step 3: Cross multiply
    329,111.10x = 493,666.65 × 79,793.10
  4. Step 4: Simplify right side
    329,111.10x = 39,391,192,370.12
  5. Step 5: Solve for x
    x = 39,391,192,370.12/329,111.10
  6. Step 6: Final answer
    x = 119,689.65

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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.