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Finding the Fourth Proportional to 239,950.50, 331,131.72 and 139,354.98

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Solution

The fourth proportional to 239,950.50, 331,131.72 and 139,354.98 is: 192,309.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,950.50 : 331,131.72 = 139,354.98 : x
  2. Step 2: Convert to fraction form
    239,950.50/331,131.72 = 139,354.98/x
  3. Step 3: Cross multiply
    239,950.50x = 331,131.72 × 139,354.98
  4. Step 4: Simplify right side
    239,950.50x = 46,144,854,217.97
  5. Step 5: Solve for x
    x = 46,144,854,217.97/239,950.50
  6. Step 6: Final answer
    x = 192,309.89

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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.