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Finding the Fourth Proportional to 399,223.90, 598,919.05 and 133,067.10

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Solution

The fourth proportional to 399,223.90, 598,919.05 and 133,067.10 is: 199,628.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,223.90 : 598,919.05 = 133,067.10 : x
  2. Step 2: Convert to fraction form
    399,223.90/598,919.05 = 133,067.10/x
  3. Step 3: Cross multiply
    399,223.90x = 598,919.05 × 133,067.10
  4. Step 4: Simplify right side
    399,223.90x = 79,696,421,118.26
  5. Step 5: Solve for x
    x = 79,696,421,118.26/399,223.90
  6. Step 6: Final answer
    x = 199,628.38

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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.