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Finding the Fourth Proportional to 356,166.55, 491,509.78 and 195,021.57

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Solution

The fourth proportional to 356,166.55, 491,509.78 and 195,021.57 is: 269,129.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,166.55 : 491,509.78 = 195,021.57 : x
  2. Step 2: Convert to fraction form
    356,166.55/491,509.78 = 195,021.57/x
  3. Step 3: Cross multiply
    356,166.55x = 491,509.78 × 195,021.57
  4. Step 4: Simplify right side
    356,166.55x = 95,855,008,965.95
  5. Step 5: Solve for x
    x = 95,855,008,965.95/356,166.55
  6. Step 6: Final answer
    x = 269,129.73

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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.