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Finding the Fourth Proportional to 245,719.40, 368,528.70 and 68,181.80

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Solution

The fourth proportional to 245,719.40, 368,528.70 and 68,181.80 is: 102,258.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,719.40 : 368,528.70 = 68,181.80 : x
  2. Step 2: Convert to fraction form
    245,719.40/368,528.70 = 68,181.80/x
  3. Step 3: Cross multiply
    245,719.40x = 368,528.70 × 68,181.80
  4. Step 4: Simplify right side
    245,719.40x = 25,126,950,117.66
  5. Step 5: Solve for x
    x = 25,126,950,117.66/245,719.40
  6. Step 6: Final answer
    x = 102,258.72

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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.