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Finding the Fourth Proportional to 245,710.77, 368,566.30 and 68,217.80

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Solution

The fourth proportional to 245,710.77, 368,566.30 and 68,217.80 is: 102,326.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,710.77 : 368,566.30 = 68,217.80 : x
  2. Step 2: Convert to fraction form
    245,710.77/368,566.30 = 68,217.80/x
  3. Step 3: Cross multiply
    245,710.77x = 368,566.30 × 68,217.80
  4. Step 4: Simplify right side
    245,710.77x = 25,142,780,382.58
  5. Step 5: Solve for x
    x = 25,142,780,382.58/245,710.77
  6. Step 6: Final answer
    x = 102,326.73

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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.