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Finding the Fourth Proportional to 663,543.72, 995,021.82 and 190,121.64

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Solution

The fourth proportional to 663,543.72, 995,021.82 and 190,121.64 is: 285,098.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,543.72 : 995,021.82 = 190,121.64 : x
  2. Step 2: Convert to fraction form
    663,543.72/995,021.82 = 190,121.64/x
  3. Step 3: Cross multiply
    663,543.72x = 995,021.82 × 190,121.64
  4. Step 4: Simplify right side
    663,543.72x = 189,175,180,254.19
  5. Step 5: Solve for x
    x = 189,175,180,254.19/663,543.72
  6. Step 6: Final answer
    x = 285,098.29

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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.