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Finding the Fourth Proportional to 199,614.96, 299,578.86 and 139,250.79

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Solution

The fourth proportional to 199,614.96, 299,578.86 and 139,250.79 is: 208,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,614.96 : 299,578.86 = 139,250.79 : x
  2. Step 2: Convert to fraction form
    199,614.96/299,578.86 = 139,250.79/x
  3. Step 3: Cross multiply
    199,614.96x = 299,578.86 × 139,250.79
  4. Step 4: Simplify right side
    199,614.96x = 41,716,592,922.30
  5. Step 5: Solve for x
    x = 41,716,592,922.30/199,614.96
  6. Step 6: Final answer
    x = 208,985.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.