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Finding the Fourth Proportional to 245,783.54, 368,695.21 and 68,290.57

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Solution

The fourth proportional to 245,783.54, 368,695.21 and 68,290.57 is: 102,441.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,783.54 : 368,695.21 = 68,290.57 : x
  2. Step 2: Convert to fraction form
    245,783.54/368,695.21 = 68,290.57/x
  3. Step 3: Cross multiply
    245,783.54x = 368,695.21 × 68,290.57
  4. Step 4: Simplify right side
    245,783.54x = 25,178,404,954.71
  5. Step 5: Solve for x
    x = 25,178,404,954.71/245,783.54
  6. Step 6: Final answer
    x = 102,441.38

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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.