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Finding the Fourth Proportional to 253,048, 349,206.66 and 139,870.75

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Solution

The fourth proportional to 253,048, 349,206.66 and 139,870.75 is: 193,021.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,048 : 349,206.66 = 139,870.75 : x
  2. Step 2: Convert to fraction form
    253,048/349,206.66 = 139,870.75/x
  3. Step 3: Cross multiply
    253,048x = 349,206.66 × 139,870.75
  4. Step 4: Simplify right side
    253,048x = 48,843,797,439.20
  5. Step 5: Solve for x
    x = 48,843,797,439.20/253,048
  6. Step 6: Final answer
    x = 193,021.87

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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.