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Finding the Fourth Proportional to 245,178.74, 367,789.26 and 67,685.78

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Solution

The fourth proportional to 245,178.74, 367,789.26 and 67,685.78 is: 101,534.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,178.74 : 367,789.26 = 67,685.78 : x
  2. Step 2: Convert to fraction form
    245,178.74/367,789.26 = 67,685.78/x
  3. Step 3: Cross multiply
    245,178.74x = 367,789.26 × 67,685.78
  4. Step 4: Simplify right side
    245,178.74x = 24,894,101,099.78
  5. Step 5: Solve for x
    x = 24,894,101,099.78/245,178.74
  6. Step 6: Final answer
    x = 101,534.50

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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.