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Finding the Fourth Proportional to 276,710.30, 415,065.52 and 213,622.52

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Solution

The fourth proportional to 276,710.30, 415,065.52 and 213,622.52 is: 320,433.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,710.30 : 415,065.52 = 213,622.52 : x
  2. Step 2: Convert to fraction form
    276,710.30/415,065.52 = 213,622.52/x
  3. Step 3: Cross multiply
    276,710.30x = 415,065.52 × 213,622.52
  4. Step 4: Simplify right side
    276,710.30x = 88,667,342,347.51
  5. Step 5: Solve for x
    x = 88,667,342,347.51/276,710.30
  6. Step 6: Final answer
    x = 320,433.83

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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.