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Finding the Fourth Proportional to 291,057.34, 436,658.66 and 101,520.42

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Solution

The fourth proportional to 291,057.34, 436,658.66 and 101,520.42 is: 152,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,057.34 : 436,658.66 = 101,520.42 : x
  2. Step 2: Convert to fraction form
    291,057.34/436,658.66 = 101,520.42/x
  3. Step 3: Cross multiply
    291,057.34x = 436,658.66 × 101,520.42
  4. Step 4: Simplify right side
    291,057.34x = 44,329,770,559.84
  5. Step 5: Solve for x
    x = 44,329,770,559.84/291,057.34
  6. Step 6: Final answer
    x = 152,305.97

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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.