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Finding the Fourth Proportional to 247,297.38, 370,995.30 and 78,812.25

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Solution

The fourth proportional to 247,297.38, 370,995.30 and 78,812.25 is: 118,234.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,297.38 : 370,995.30 = 78,812.25 : x
  2. Step 2: Convert to fraction form
    247,297.38/370,995.30 = 78,812.25/x
  3. Step 3: Cross multiply
    247,297.38x = 370,995.30 × 78,812.25
  4. Step 4: Simplify right side
    247,297.38x = 29,238,974,332.43
  5. Step 5: Solve for x
    x = 29,238,974,332.43/247,297.38
  6. Step 6: Final answer
    x = 118,234.06

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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.