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Finding the Fourth Proportional to 245,873.16, 368,796.78 and 68,390.28

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Solution

The fourth proportional to 245,873.16, 368,796.78 and 68,390.28 is: 102,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,873.16 : 368,796.78 = 68,390.28 : x
  2. Step 2: Convert to fraction form
    245,873.16/368,796.78 = 68,390.28/x
  3. Step 3: Cross multiply
    245,873.16x = 368,796.78 × 68,390.28
  4. Step 4: Simplify right side
    245,873.16x = 25,222,115,047.30
  5. Step 5: Solve for x
    x = 25,222,115,047.30/245,873.16
  6. Step 6: Final answer
    x = 102,581.82

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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.