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Finding the Fourth Proportional to 245,611.88, 368,417.79 and 68,118.88

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Solution

The fourth proportional to 245,611.88, 368,417.79 and 68,118.88 is: 102,178.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,611.88 : 368,417.79 = 68,118.88 : x
  2. Step 2: Convert to fraction form
    245,611.88/368,417.79 = 68,118.88/x
  3. Step 3: Cross multiply
    245,611.88x = 368,417.79 × 68,118.88
  4. Step 4: Simplify right side
    245,611.88x = 25,096,207,226.88
  5. Step 5: Solve for x
    x = 25,096,207,226.88/245,611.88
  6. Step 6: Final answer
    x = 102,178.31

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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.