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Finding the Fourth Proportional to 202,582.76, 279,230.79 and 143,665.89

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Solution

The fourth proportional to 202,582.76, 279,230.79 and 143,665.89 is: 198,022.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,582.76 : 279,230.79 = 143,665.89 : x
  2. Step 2: Convert to fraction form
    202,582.76/279,230.79 = 143,665.89/x
  3. Step 3: Cross multiply
    202,582.76x = 279,230.79 × 143,665.89
  4. Step 4: Simplify right side
    202,582.76x = 40,115,939,452.38
  5. Step 5: Solve for x
    x = 40,115,939,452.38/202,582.76
  6. Step 6: Final answer
    x = 198,022.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.