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Finding the Fourth Proportional to 451,223.85, 622,972.05 and 290,358.45

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Solution

The fourth proportional to 451,223.85, 622,972.05 and 290,358.45 is: 400,876.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,223.85 : 622,972.05 = 290,358.45 : x
  2. Step 2: Convert to fraction form
    451,223.85/622,972.05 = 290,358.45/x
  3. Step 3: Cross multiply
    451,223.85x = 622,972.05 × 290,358.45
  4. Step 4: Simplify right side
    451,223.85x = 180,885,198,831.32
  5. Step 5: Solve for x
    x = 180,885,198,831.32/451,223.85
  6. Step 6: Final answer
    x = 400,876.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.