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Finding the Fourth Proportional to 199,614.58, 299,578.28 and 139,250.42

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Solution

The fourth proportional to 199,614.58, 299,578.28 and 139,250.42 is: 208,984.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,614.58 : 299,578.28 = 139,250.42 : x
  2. Step 2: Convert to fraction form
    199,614.58/299,578.28 = 139,250.42/x
  3. Step 3: Cross multiply
    199,614.58x = 299,578.28 × 139,250.42
  4. Step 4: Simplify right side
    199,614.58x = 41,716,401,312.88
  5. Step 5: Solve for x
    x = 41,716,401,312.88/199,614.58
  6. Step 6: Final answer
    x = 208,984.74

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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.