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Finding the Fourth Proportional to 448,428.86, 672,640.86 and 192,223.70

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Solution

The fourth proportional to 448,428.86, 672,640.86 and 192,223.70 is: 288,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,428.86 : 672,640.86 = 192,223.70 : x
  2. Step 2: Convert to fraction form
    448,428.86/672,640.86 = 192,223.70/x
  3. Step 3: Cross multiply
    448,428.86x = 672,640.86 × 192,223.70
  4. Step 4: Simplify right side
    448,428.86x = 129,297,514,880.38
  5. Step 5: Solve for x
    x = 129,297,514,880.38/448,428.86
  6. Step 6: Final answer
    x = 288,334.51

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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.