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Finding the Fourth Proportional to 247,286.40, 370,929.60 and 245,443.20

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Solution

The fourth proportional to 247,286.40, 370,929.60 and 245,443.20 is: 368,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,286.40 : 370,929.60 = 245,443.20 : x
  2. Step 2: Convert to fraction form
    247,286.40/370,929.60 = 245,443.20/x
  3. Step 3: Cross multiply
    247,286.40x = 370,929.60 × 245,443.20
  4. Step 4: Simplify right side
    247,286.40x = 91,042,147,998.72
  5. Step 5: Solve for x
    x = 91,042,147,998.72/247,286.40
  6. Step 6: Final answer
    x = 368,164.80

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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.