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Finding the Fourth Proportional to 276,874.58, 415,020.26 and 143,613.38

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Solution

The fourth proportional to 276,874.58, 415,020.26 and 143,613.38 is: 215,268.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,874.58 : 415,020.26 = 143,613.38 : x
  2. Step 2: Convert to fraction form
    276,874.58/415,020.26 = 143,613.38/x
  3. Step 3: Cross multiply
    276,874.58x = 415,020.26 × 143,613.38
  4. Step 4: Simplify right side
    276,874.58x = 59,602,462,307.08
  5. Step 5: Solve for x
    x = 59,602,462,307.08/276,874.58
  6. Step 6: Final answer
    x = 215,268.81

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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.