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Finding the Fourth Proportional to 245,783.94, 368,675.74 and 68,290.87

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Solution

The fourth proportional to 245,783.94, 368,675.74 and 68,290.87 is: 102,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,783.94 : 368,675.74 = 68,290.87 : x
  2. Step 2: Convert to fraction form
    245,783.94/368,675.74 = 68,290.87/x
  3. Step 3: Cross multiply
    245,783.94x = 368,675.74 × 68,290.87
  4. Step 4: Simplify right side
    245,783.94x = 25,177,186,110.80
  5. Step 5: Solve for x
    x = 25,177,186,110.80/245,783.94
  6. Step 6: Final answer
    x = 102,436.25

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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.