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Finding the Fourth Proportional to 253,860.99, 350,332.01 and 139,138.72

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Solution

The fourth proportional to 253,860.99, 350,332.01 and 139,138.72 is: 192,013.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,860.99 : 350,332.01 = 139,138.72 : x
  2. Step 2: Convert to fraction form
    253,860.99/350,332.01 = 139,138.72/x
  3. Step 3: Cross multiply
    253,860.99x = 350,332.01 × 139,138.72
  4. Step 4: Simplify right side
    253,860.99x = 48,744,747,188.65
  5. Step 5: Solve for x
    x = 48,744,747,188.65/253,860.99
  6. Step 6: Final answer
    x = 192,013.54

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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.