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Finding the Fourth Proportional to 253,949.70, 350,454.53 and 139,238.82

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Solution

The fourth proportional to 253,949.70, 350,454.53 and 139,238.82 is: 192,151.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,949.70 : 350,454.53 = 139,238.82 : x
  2. Step 2: Convert to fraction form
    253,949.70/350,454.53 = 139,238.82/x
  3. Step 3: Cross multiply
    253,949.70x = 350,454.53 × 139,238.82
  4. Step 4: Simplify right side
    253,949.70x = 48,796,875,220.85
  5. Step 5: Solve for x
    x = 48,796,875,220.85/253,949.70
  6. Step 6: Final answer
    x = 192,151.73

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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.