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Finding the Fourth Proportional to 367,618.51, 551,425.73 and 143,135.11

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Solution

The fourth proportional to 367,618.51, 551,425.73 and 143,135.11 is: 214,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,618.51 : 551,425.73 = 143,135.11 : x
  2. Step 2: Convert to fraction form
    367,618.51/551,425.73 = 143,135.11/x
  3. Step 3: Cross multiply
    367,618.51x = 551,425.73 × 143,135.11
  4. Step 4: Simplify right side
    367,618.51x = 78,928,382,520.38
  5. Step 5: Solve for x
    x = 78,928,382,520.38/367,618.51
  6. Step 6: Final answer
    x = 214,701.87

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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.