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Finding the Fourth Proportional to 245,783.57, 368,675.18 and 68,290.49

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Solution

The fourth proportional to 245,783.57, 368,675.18 and 68,290.49 is: 102,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,783.57 : 368,675.18 = 68,290.49 : x
  2. Step 2: Convert to fraction form
    245,783.57/368,675.18 = 68,290.49/x
  3. Step 3: Cross multiply
    245,783.57x = 368,675.18 × 68,290.49
  4. Step 4: Simplify right side
    245,783.57x = 25,177,009,529.36
  5. Step 5: Solve for x
    x = 25,177,009,529.36/245,783.57
  6. Step 6: Final answer
    x = 102,435.69

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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.